Javier was a lifesaver--I left my passport in a drawer when I moved to a new place and he found it and dropped it off.
Good location--16 min walk to Hernandez subte, 9 min to Belgrano-C station, 10 min to Chinatown, and half a block to one of the best pizza places in town (La Fina).
Lots of natural light.
Pleasant and comfortable furniture and spacious living area.
A/C and wi-fi both worked well.
Regarding sound, there was a constant background hum of traffic on Libertador, but this wasn’t a distraction. There was some construction noise from down the block, but again, not too bad.
The only negative is the same with all 5 of my AirBnB’s in Buenos Aires: maintenance. The washing machine had to be unplugged/replugged mid-wash several times due to a faulty door sensor; the front door knob was broken, so it had to be unlatched with the key; the flush button on the toilet would stick. None were major issues, just annoyances.
All-in-all, a pleasant stay and I would recommend.