We had a great stay at Cristina's place. It was right near a metro stop so easy to get to and within walking distance of the colosseum. Many hosts only let you check in before a certain time, but Cristina was very accommodation when it came to us checking in late (at around 11pm). She gave us a map and good tips on where to go and how to get there. The bathroom was shared between us and two other people but we didn't have any issues with that. Overall a good experience :)