The Bar/Lounge at Renuka City Hotel
The bar/lounge at Renuka City Hotel is endorsed by those who travel for a living. Out of 3 reviews tracked on TripExpert, 2 praised the bar/lounge, like Fodor's and Oyster.
Renuka City Hotel 
Fodor's
Oyster
Fodor's "There are two bars, and the hotel's restaurant offers a choice of traditional Sri Lankan, Indian, and European cuisines; rooms can be booked on a B&B, half-, or full-board basis"
Oyster "Highlights include delicious food at the popular restaurant -- though breakfast is the least memorable meal of the day -- and a lovely rooftop deck with a small pool, separate wading pool, and a bar"
