We stayed very comfortably for 8 nights at Chris's 1 bedroom apartment. Nice wooden floors, quite roomy, nice balcony to sit and eat breakfast at. The apartment felt private as there is a large tree in front. Large kitchen (by BA standards) which need some new pots and pans as the non-stick is flaking off but otherwise had everything you need, including tea, coffee, yerba mate, oil, etc. Good wifi, large modern t.v. to watch as much football as you like but more importantly for us a stereo which we plugged our aux cord into.
You can hear city noises but no clubs/restaurant or party noise. There is a small shop 5m from the apartment with beer and basic groceries.
The location was excellent, very safe, really close to great restaurants, you must go to El Trapiche, a local restaurant with the football on and perfectly pink Bife de lomo. If you rent bikes don't leave them outside overnight, you'll notice that no one else does this in BA.
Chris was very friendly, met us at the apartment to let us in and when we left. As soon as we booked he messaged to find out what time we were arriving. He even provided a complimentary (and very drinkable) bottle of red wine for us. As a host he was very thoughtful and his apartment had everything you could want. We recommend his place and in fact we tried to book again in a few weeks time but it was already booked!