Assembly Point Thonglor runs a weekly Latin social night on the hotel rooftop, a class-plus-party format on Tuesdays (360 THB class+party; 260 THB party-only). The night programs salsa, bachata and kizomba; the dance spot is the Assembly Point rooftop on the 8th floor of One One Bangkok, and reviews mention live music and occasional DJ sets. Entrance is through the One One building (look for signs by the 7th-floor lobby).
The rooftop mixes bar seating, a small open dance area and city views over Sukhumvit‑Thonglor, so the floor can feel tight once the social starts, it’s more bar-with-dancing than a dedicated sala. The venue lists hours from 18:00–02:00; check the Tuesday event post for exact class start time and cover. Reviews also note drink promotions and live acts on some nights, so expect a social that runs like a hotel rooftop event rather than a packed club.
If you want room to move, arrive early for the class or confirm set times on the event page before you go.
Price: 0 THB
Event found via web search, treat this information with caution.