We stayed one week in Mariannas place.
She and her husband are great hosts. Both are super kind and friendly. They give you the best tips and provide advises to enjoy your trip in Rome.
The room is absolutely clean and comfortable. Washmachine and all equipments are available and work great.
The location is really central, you can walk everywhere or take the metro which is around the corner.
Also the room is really quiet, warm and comfortable. You hear nothing. So you can have a nice deep sleep there.