I have rented a room in Cristina house for 3 nights together with my gf. Cristina is a good host, she answers quickly, check-in was fast. Cristina gave us the map and showed places to visit. She has WIFI in her house, but I used free WIFI from the restaurant on the 1st floor :) The house is situated close to the metro, also there are 2 big supermarkets in 5 minutes by walking. The last day in Rome, we had a late flight back, but Cristina allowed us to leave our stuff in a hallway, so we had a chance to walk around without backpacks :)
Btw, it's possible to take a metro and go to the sea :)
Thanks!