We enjoyed staying in Rossy's apartment. The apartment itself was very clean. The beds are comfortable with plenty of linen, towels, and blankets provided. The wi-fi is good and it is in a relatively quiet neighbourhood. It feels safe and secure and there is a young concierge (Jonathan) there six days in the week who is very helpful.
There is a mall in the neighbourhood with restaurants, stores, and a well stocked supermarket, as well as plenty of smaller street food type places.
A couple of things to note: As others have mentioned, the hot water is not constant and you will have to learn how to navigate that.
Also, the location is on the edges of Roma Norte. Roma Norte Centro (the trendy part with all the bars, cafes, restaurants, stores, etc. is about a 40-45 minutes walk, or 15-20 minutes by car.
Overall, we were pleased with our stay.