Me and my friend were stayed for 5 nights in Cristina's apartment. She was very friendly and explained us where to go and what to see.
The room was big and clean. Cristina provided us everything what we needed (map, towels, hairdryer, shampoo). Also it was allowed to use the kitchen.
The apartment is located really close to the center (Coliseum) - 20 minutes by walk or 10 minutes by bus. For this price it's nice choice.