Bar Milan
Popular with a bohemian crowd, Bar Milan has a very relaxed and unpretentious atmosphere. It has a tendency to get overcrowded however. Plays electronic music and rock We-Th, more Spanish language rock and Latin music Fr-Sa. The mojito is the specialty cocktail. Note: Cash needs to be changed into milagros, the in-bar currency, before use, bartenders and waiters don't accept cash. Larger-denomination milagro bills can be changed back when leaving.
El Colmillo
Run by British expatriates, this is one of the best electronic music clubs in the city. Relatively large dancefloor and lots of places to sit downstairs, lounge upstairs. Theme nights, upstairs often plays hip hop, reggae, funk, downstairs tends to be psychedelic trance or house. Often very few people before 1AM or so.
gay-friendly
The Zona Rosa is also a very gay-friendly area. In the information kiosks you'll find many guides with gay places to visit in the zone. A good first stop is the BGay cafe on Amberes a street which also has several other gay bars and clubs.
Dance
In Amberes street, there are a few places to go and let loose on the dance floor, including:
BoyBar
A nightclub which opens in the afternoon Fridays only. It has a lobby, 1st floor and terrace. It's very well-known for its 'Dark Room' where people get in and screw each others arses.
Lipstick
This nightclub is one of the hottest in the gay community. It has a 1st floor and a terrace, it has lots of screens on which you can see the videos of the song that's played.