M on T.
Google
Very chill location, sitting outside on the stairs, comfortably with pillows, watching the people passing by and - important - the best cocktails imaginable. Forget Mai Tai, Negroni, Long Island Ice Tea. Here come Daddy Issues, Orson Welles and many, many others. You'll need more than one night to enjoy them all.
Not to forget: the nice staff and the good music.