My family and I stayed in Elena and Elizabeth's apartment for 3 days. The overall experience was awesome. The apartment was beautiful, with very friendly receptionists, it felt more like a great hotel!
As for the apartment, it was really clean, comfortable, and just 5-10 minutes to the train station. However the air conditioner malfunctioned during our stay (and it was a very hot day), but they were quick to rectify the problem.
It was really a great experience for me and I would definitely stay here again!