The pitch: an editor's read on Number 8 Bar
Number 8 Bar sits in the lobby of the Anantara Siam Bangkok at 155 Rajadamri Road, five minutes from Ratchadamri BTS. The counter rebuilt in 2023 around an eight-step classic-cocktail build, hence the name, and runs from 5pm to 1am every night.
This is the room for a drinker who wants the Siam-side hotel-bar option that takes its classics seriously. Skip it if a rooftop view is the brief, or if a B280 mojito and a sidewalk seat is the night.
The room: a closer read
The space runs as a 24-seat counter under the lobby's hand-painted ceiling, with a small upper mezzanine for groups. Class Magazine's 2024 Bangkok hotel-bar piece described the counter as 'the most patient classics build in the city, with a head bartender who will refuse to rush a Sazerac'.
The most patient classics build in the city, with a head bartender who will refuse to rush a Sazerac.
What to order, and what to skip
The list runs short and the bar runs it on its own terms. Order from the signatures.
Skip the off-list improvisations on a first visit. The published list is the room's editorial position; the bartenders built every serve to earn its place.
The crowd: who shows up, and when
The crowd is 80% hotel guests on a weeknight and 50% Bangkok regulars on a Friday or Saturday. r/bangkok cocktail threads consistently flag the 6pm to 7:30pm window as the best for a counter seat and an unrushed talk-through with the head bartender.
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What regulars say
- “6pm for a counter seat. The head bartender will walk the build if it is quiet.” (r/bangkok cocktail thread, 2025)
- “Order the Sazerac. The eight-step build is the order.” (Google Maps review, February 2026)
- “Pricey but earnest. The B620 Negroni reads as fair value for the build.” (TripAdvisor review, January 2026)
- “Sunday at 7pm is the quietest. Hotel guests rest and the counter opens up.” (r/bangkok bar thread, 2024)
Who it is for
- Classics drinkers who want a patient build and a clean back bar.
- Hotel guests at the Anantara Siam, the Park Hyatt or the St Regis on a one-elevator night.
- Travellers planning a Ratchaprasong cocktail night that pairs with BKK Social Club at the Four Seasons.
- Avoid if the brief is a rooftop view. Try Red Sky at Centara Grand instead.