I highly recommend Michela's house! It is very clean, spacious, pleasant, with a huge Carrefour nearby, and all the services you may need.
There are 4 rooms in the apartment, but all of them are super independent.
You can go to the Vatican on foot, the metro is only 3 minutes away, the location is very good.
Michela is very kind, Roberto too and Sonia is wonderful!
Thanks to the 3 of us, we spent an incredible month in this place.