The short answer: A single well-implemented language page - properly translated, correctly tagged with hreflang, and targeting real search queries in that language - can increase organic traffic from that market by 40 to 60% without any additional link building. Most Southeast Asian travel businesses leave this traffic entirely on the table.
Why Multilingual SEO Matters for Southeast Asian Tourism
The assumption that "our guests are international travellers, so English is enough" is partially true and significantly incomplete. International travellers from Europe, North America, and Australia do search in English. But the fastest-growing inbound tourism markets for Cambodia, Vietnam, Thailand, and Indonesia are regional: Vietnamese tourists visiting Cambodia, Thai tourists in Vietnam, Chinese tourists across the region, Korean tourists in Bali and Danang, and intra-ASEAN travel that is growing at 15 to 20% year on year.
None of these travellers search primarily in English. A Vietnamese tourist planning a trip from Ho Chi Minh City to Kampot searches in Vietnamese. A Thai family planning a Bali holiday searches in Thai. A Korean digital nomad researching Da Nang searches in Korean. The English-only website is invisible to all of them, regardless of how well it ranks for English queries.
In Cambodia specifically, where Vietnam is the largest source of foreign tourists by volume, a guesthouse website with a single Vietnamese landing page targeting the query "nh khch Kampot" (guesthouse in Kampot) has almost no competition from other English-first guesthouse websites. The query exists, the intent is commercial, and the supply of quality Vietnamese-language accommodation content in Kampot is effectively zero. This is the opportunity that multilingual SEO represents in developing tourism markets.
Which Languages Should You Prioritise?
Language priority should be determined by your actual or target guest mix, not by assumption. The process: pull your booking data for the past 12 months and identify the top five source markets by guest nights. Those are your priority languages, in order.
For a typical boutique property in Kampot, the priority order based on regional tourism data is: English (international backpackers and European visitors), Vietnamese (cross-border day-trippers and short-stay guests from HCMC), Korean (significant growth market across Cambodia), Chinese (historically largest inbound market, recovering post-pandemic), and French (strong French-speaking visitor base tied to Cambodia's Francophone history).
For a hotel in Da Nang targeting the digital nomad market, the priority order shifts: English (dominant), Korean (massive presence in Da Nang with direct flight routes), Japanese (growing market with direct flights), Chinese (regional market), and Russian (growing post-pandemic presence in Vietnamese coastal cities).
A practical approach for a small operation with limited resources: implement English thoroughly first, then add one regional language that represents your second-largest source market. A single additional language, done well, will outperform three additional languages done poorly.
Hreflang: The Technical Foundation
Hreflang is an HTML attribute that tells Google which language version of a page to serve to users in different regions. Without correct hreflang implementation, Google cannot reliably determine which language version of your content to show in each market, which leads to either the wrong version ranking in each market or both versions being suppressed as duplicate content.
Hreflang tags are placed in the <head> section of your HTML (or in your XML sitemap) and follow this format: <link rel="alternate" hreflang="vi" href="https://yoursite.com/vi/" /> for Vietnamese, <link rel="alternate" hreflang="ko" href="https://yoursite.com/ko/" /> for Korean, and so on. Every language version of a page must reference all other language versions, including itself, in its hreflang tags. This reciprocity requirement is the most common implementation error.
Language codes for Southeast Asian markets: vi for Vietnamese, th for Thai, id for Bahasa Indonesia, ms for Bahasa Malaysia, km for Khmer (Cambodian), ko for Korean, zh-CN for Simplified Chinese, zh-TW for Traditional Chinese, ja for Japanese, fr for French. Region-specific codes (e.g., vi-VN for Vietnamese as used in Vietnam) are optional but improve precision when your content is language-and-region specific.
URL structure for multilingual content should use subdirectories (e.g., yoursite.com/vi/ for Vietnamese) rather than subdomains (e.g., vi.yoursite.com) where possible. Subdirectories inherit the main domain's authority, whereas subdomains are treated as separate sites with their own authority building requirements.
Content Approach: Translation vs Localisation
There is a critical distinction between translation and localisation that determines whether your multilingual content ranks or not. Translation converts the words. Localisation converts the intent.
A translated page for Vietnamese guests that uses the same content as the English page, word-for-word, will rank poorly in Vietnamese search results because the keyword targets, cultural references, and search intent embedded in the original English content do not map to Vietnamese search behaviour. Vietnamese travellers searching for accommodation in Kampot use different search terms, have different information priorities, and respond to different trust signals than English-speaking travellers.
True localisation means: using Vietnamese keywords that Vietnamese speakers actually search (identified through Vietnamese keyword research, not English translation), including pricing in Vietnamese Dong as well as USD, referencing transport routes that Vietnamese travellers use (the bus from HCMC to Kampot, the border crossing at Moc Bai), and addressing the specific concerns Vietnamese travellers have (visa requirements for Vietnamese nationals visiting Cambodia, mobile SIM card availability).
For properties with limited budget, the pragmatic approach is partial localisation: translate the homepage and one key landing page (your rooms or tours page), implement hreflang correctly, and write one piece of destination content in the target language addressing the specific information needs of that market. This partial approach delivers 70 to 80% of the benefit of full localisation at 20 to 30% of the cost.
Local Search Signals in Non-English Markets
Google's local search algorithm operates similarly across languages but with important differences in how trust signals are established. Reviews in the target language carry more weight for searches in that language than English reviews. A hotel with 50 Vietnamese-language reviews will rank higher for Vietnamese search queries than an identical hotel with 200 English reviews and no Vietnamese reviews, all other things being equal.
This means actively encouraging reviews in the target language from guests of that nationality. In your post-stay email to Vietnamese guests, ask for a Google review in Vietnamese. The request can be simple: "If you enjoyed your stay, a brief review in Vietnamese on Google would help other Vietnamese travellers find us - and we read every one."
Google Business Profile supports posts in multiple languages. Publishing occasional posts in Vietnamese or Korean - even short ones about local events or seasonal rates - signals to Google that your business actively serves these language communities and improves your visibility in searches from those markets.
Platform Differences: Where Each Language Market Searches
Not all inbound tourism markets use Google as their primary search platform, and this affects your multilingual strategy significantly.
Vietnamese travellers use Google as their primary search engine, making Vietnamese-language Google SEO directly applicable. However, they also rely heavily on Zalo (Vietnam's dominant messaging app) for travel recommendations and Facebook groups for peer advice. SEO for Vietnamese travellers is complemented by active participation in Vietnamese travel Facebook groups.
Korean travellers use Google but also rely significantly on Naver for travel research, particularly for Korean-language content. A hotel targeting Korean guests should consider a Naver Blog presence in addition to Google SEO. Korean guests also use Naver Map rather than Google Maps, so a Naver Place listing is analogous to a Google Business Profile for this market.
Chinese travellers in most markets use Baidu rather than Google, and WeChat rather than Facebook or Instagram. For properties seriously targeting Chinese guests, Baidu SEO and WeChat presence are separate strategies from Google SEO. The traveller behaviour and platform ecosystem are sufficiently different that they require dedicated attention rather than adaptation of a Google-first strategy.
Japanese travellers generally use Google but are highly influenced by Japanese travel aggregators including Jalan and Rakuten Travel for accommodation booking. A listing on these platforms, which requires Japanese-language content, can significantly improve visibility for this market beyond what Google SEO alone achieves.
A Practical 90-Day Multilingual SEO Plan
For a tourism business in Southeast Asia implementing multilingual SEO for the first time, this sequence delivers the fastest measurable results within a 90-day timeframe.
Days 1 to 30: Identify your priority target language based on booking data. Conduct keyword research in that language using Google Keyword Planner (set to target country and language) to identify the three to five highest-volume queries with commercial intent. Brief a native-speaking translator or localisation agency on the specific search queries you are targeting.
Days 30 to 60: Implement the multilingual content. Minimum viable: a translated and localised homepage, a key rooms or tours page, and one destination content piece targeting a high-intent query in the target language. Implement hreflang tags across all pages. Set up Google Business Profile posts in the target language. Add the language version to your XML sitemap.
Days 60 to 90: Begin post-stay review solicitation in the target language. Set up Google Search Console as a separate property for the target language site section to track impressions and rankings independently. Evaluate performance and identify the next priority: additional content, a second target language, or refinement of the existing implementation.
If you need help with multilingual keyword research, hreflang implementation, or localisation strategy for your Southeast Asian tourism business, get in touch.
