I stayed at this place during a workshop I attended in Rome and loved it.
The room is very small with a pretty big balcony. It has it's own little kitchen and bathroom and a separate entrance which can be locked.
There is also a fridge which gets refilled with juice and water and there is everything available to have a small breakfast which is very handy.
Walking to the next Metro station is about 10 minutes and there are also some buses in the area.
I only met Michelangelo who was very welcoming and friendly.
I would come again any time, this is a truly great place to stay.