Tess Bar & Kitchen is a bar at 36 Seah St in Bugis, Singapore, with a Google rating of 4.7 from 1,307 reviews. Its listing says bookings are taken by WhatsApp, which is the simplest way to plan an evening there.
Bars in Bugis draw a mix of shoppers, office workers and groups out for the night, so the room can change quickly from quiet early evening to busy late on weekends. A good bar is judged on its drinks, but also on how well staff explain the menu and how the room copes when it fills. Booking ahead is worth the effort on Friday and Saturday nights, and smaller bars often keep a few walk-in seats for early arrivals. Regulars tend to ask staff for a recommendation rather than order from memory, since menus change often.
For an evening drink in the heart of Bugis, it is a well-reviewed place to start the night.