It was a good stay of 4 nights. The place is VERY small, suitable in my opinion only for 1 person (like in my case) or if it's 2 people, only for very short stays. I love the quietness of the place, for 1st time in Rome I could sleep without earplugs!! Also the neighbourhood is safe and quiet, a purely residential one, 10 minutes walk from metro/train, so very well located if you need to move around, even on foot to the center for sightseeing (I was there to work though).
The bed is good and Federica was super quick in answering messages and very responsive (I asked for a blanket and next day it was there). The place is well kept although other kind of cupboards could save space and maximize the little capacity existent for storing crockery and so (big wardrobe though). Although there is no window, you are able to ventilate the place as the door has open glasses. Lot of spices and cooking ingredients at disposal.
The trickiest part was the bathroom, as if you open the shower to clean your feet, to shower, etc all the bathroom floods (as there is not shower plate) and there isn't anything to dry it, so you will be wetting the rest of the apartment if you have to go to the bathroom again...Maybe an absorbent mop is needed to avoid that.
Overall it was a good stay although I guess people staying more than only to sleep at night can struggle with the very little space of it.