The bed is very comfy (with a nice fan next to it).
I enjoyed spending 3 days in Rome at their place. I had my own space in their fridge. Bathroom and kitchen are big enough... There is hot water. Clean house. It took me about 8-10 min to walk from their place to the closest Metro A stop. From the Metro A stop, it takes about 10 min (in the metro, of course) to get to the Vatican City, and about 17 to get to the middle of Rome.
I would definitely stay again at their place.
(and I was welcome by one of their girlfriends. She was extremely nice, helpful, and friendly)