Cinzia's flat is very close to bus 75 stop, which connects with Termini and passes right outside the colosseum. There are a few stairs to negotiate, and you can also approach the flat from another direction (Viale del Trastevere) which requires a climb up some 70 stairs from the main road, then a further climb up a moderate incline. But you only need to be moderately fit, no more than that, and you'll be rewarded with a view that will melt your heart every time, day or night. The flat itself is spacious, clean and adequately equipped, there is even an induction hob (we didn't use it but nice to have the option), a Nespresso machine, some cupboard and bathroom essentials. I enjoyed my stay at Cinzia's very much. Recommended.