We stayed at Hernán's place for a week. The location is great, between cool bars and restaurants and the Plaza Italia station. Around the corner is very tasty ice cream (Tufic).
The apartment is basic and was pretty clean. Kitchen is reasonably well furnished, and has a good stove and an oven, but no microwave. The bed is good and the shower is excellent. Washer and dryer were in the building for about 1 USD each, with a drying rack and detergent in the apartment. The apartment is quiet, and had good heating.
Check-in was easy and Hernán was responsive. We enjoyed our stay and the apartment is a good deal.