I am in the process of planning a 10 day trip to Buenos Aires at the end of April. Our current plan is to rent an apartment rather than stay in a hotel and I'm wondering if anybody might have some recommendations for (1) sources for vacation rentals (so far I've been looking at craigslist http://www.bytargentina.com and (2) neighborhoods to stay in. We are currently concentrating on the San Telmo neighborhood because of what we've read about the active street culture, markets, cafes, etc., but am open to anywhere that would be fun and lively. I've not been to BA before, so I'd love to hear about any other must-sees or must-dos as well. Thanks in advance,

Jennifer in Providence, RI