The price and the location (right next to the Cadorna train station and Metro stop) were great. The place was clean, and communication was excellent. The staff was helpful. Our big gripe is that the bathroom was way too small. I am 6' 1" tall (186 cm), and I could not sit straight on the toilet because the sink plumbing was in the way. I had to sit almost sideways, and it took some contortions even to sit down at all. My wife is 5' 1" tall, and even for her it was challenging. Everything was very cramped -- perhaps not unexpected for the price, but overly tight imho.
I don't think we would rent this unit again.