Located at 1701 Commonwealth, in Houston’s Montrose neighborhood arts enclave, the Flat serves up cocktails with a focus on high-end rums. There is also a wide selection of wines and local beer on tap. The lounge is known as a great venue for music and a space to show off moves on the dance floor. The food menu features wings and unique, gourmet pizzas. The bar is open seven days a week – from 4 p.m. to 2 a.m. Monday through Saturday and from 1 p.m. to 2 a.m. on Sundays. Happy hour is from 4 p.m. to 9 p.m. Tuesday through Saturday and all day on Monday. Sunday offers reverse happy hour from 6 p.m. to 2 a.m.