The apartment is in a perfect position, near all the facilities you could need: a supermarket, a laundry, various typical places to eat and, most important thing, a metro station of the green line, Intendente. It is easily accessible from the airport and the stations.
The house is small, but it's perfect for short stays, for two or three people.
The only negative aspect is the sound insulation, you can hear a lot through the walls, but unless you are a light sleeper that's not a problem at all.
Also, don't be fooled by the aspect of the building, because the apartment is completely renovated and with a modern kitchen.
You won't meet the owner, because the check-in procedure is autonomous, but he's still really kind and available for everything, he also made us find two tasty pastel de nata upon our arrival.