The apartment was nice, but it had some down sides. It was a bit cold, and it couldn't be warmed up because the AC and the heater can't work at the same time - the main fuse goes off. Also, if the hairdryer is on, the fuse fails. There is very little natural light (because the apartment is in the backyard of the building). However, the location of the apartment is great and it compensates for everything else!
We didn't have a chance to meet Carmen, but the communication with her was easy and her responses were very fast.