I would highly recommend both this aparment and Ralph's hosting service!
The apartment was exactly what we expected and as the reviews said. Nice building, nice apartment, great location and great hosts. The balcony view was amazing. We were very close to all the palermo soho shops and restaurants and also very close to the subway, really the perfect location! Building was very secure and safe and the security staff was friendly. The studio had everything we need, including a nice bottle of wine and fruit when we arrived :)

We didn't actually meet Ralph but he was very nice over email and very accomodating, especially with a late check-out. Ralph's colleague Marcelo met us at the apartment and he was FANTASTIC! Very sweet, knowledgable, gave us tips we hadn';t heard before, was accomodating, explained everything to us, answered all of our questions and was just a great first impression of Argentina :)

The only one issues we had was that we agreed to the car service Ralph offers to coordinate from the airport to the apartment and were supposed to be greeted by a driver with our name on a sign. This driver was no where to be found when we arrived, we circled all the drivers for about an 1.5 hours, kept trying to call Ralph, had trouble talking to his colleague that didn't speak English, wasted about 30 pesos on phone calls, finally called Airbnb's customer service line and they were able to track down the right people and tell them that we were waiting, then we actually saw one of the driver services write down my name on a piece of a paper and hold up her sign - clearly they forgot about us and it was a VERY frustrating 1.5 hour start to our trip after traveling all day and being tired and just excited to start our vacation. Anyway, when it finally worked out, everything else was perfect!