I stayed here for ~1 month with my boyfriend, and would highly recommend it! The apartment is beautiful and simple, with a nice private patio, tucked away from street noise. We found everything we could need to feel at home--a nicely stocked kitchen (pots & pans, cooking oil, mate cups), warm blankets, guide books, and the roof has a nice view with lots of sun. The location is very convenient: there's a laundromat ~2 blocks away, a great & cheap pizza place on the corner, and one of the neighborhood's best bakeries right across the street! A 24-hr fast food joint and subway station are also nearby, and all the many restaurants and attractions of San Telmo are pretty much within walking distance.

Mike was very quick to respond helpfully to email, and we were greeted by his local friend who was also very kind and helpful. I felt like they really wanted to help us out and make sure we had a great stay. No downsides really, excellent for a medium-length stay.