I have stayed at the Claridge twice. It is a nice hotel, and just off Av. Florida, which is interesting asn has good shopping. But most of the gay bars are now a little further north, closer to Recoleta and Palermo. While the "microcentro" has its good points, the Claridge is a little out of the way from the other areas.
Having said this, why not stay in the new section of town called Puerto Madero? Last week I was at the brand new Sofitel there, for only $80.00 per night, and it is beautiful - very chic and European modern. Sure, it is a little further from the older neighborhoods and where the bars are, but taxis are cheap, and Puerto Madero has a lot of great shops and restaurants, and it is easy to hop in a taxi and get around.
I will be there again from 14-21 January, so if anyone is going to be there, let me know. Would love to meet for drinks somewhere.