The room you'll be living it is a part of a home, where Cristina lives with her very calm and friendly dog Brando. The room was perfectly fine (ours was even better than the one on the picture). Whole house probably needs a small refurbishment, but there's almost nothing that would make you feel kind of uncomfortable. Cristina was kind, helpful and did all she could to help us and provide any information we asked for. The house is located about 5 minutes from metro and San Giovanni, and about 15-20 minutes walk to the Colosseum etc.
As for other information: you'll probably be sharing the bathroom with others, that will occupy other rooms - so sometimes be prepared for waiting for bathroom.
Also, Rome is a very noisy city - and that can be heard in the room, even though the windows are okay.

To sum it up, I would happily recommend this room for you.