I had a great experience at Nerva accomodation. Everything looked just like the pictures, it was clean and the staff is really kind and helpful, but the most amazing thing is: location. I talked three minutes and I saw the colloseo, in 6 minutes you can get there. If you like walking you can do it for: Fontana di trevi, piazza venezia, piazza navona, foro etc. I would stay there again.