Leonel is a great host, he's been very available and very fast in solving troubles (the shower drain didn't work and he came immediately to fix it). The location is quite good, a little bit out of the city center, but the metro is near the house.
For me, anyway, the big no is about the apartment itself. To be honest, the apartment was clean, but it was very old and quite fatiscent, there was a lot of mold on the ceiling in the bathroom, the power outlets were quite ruined, there were drafts everywhere and so on.
It's not a tragedy, but I think the price was a bit too high compared to the quality.