The apartment is just as described and just as the pictures show. The stairs are talked about in the comments as well as the description. They are a little steep and can be a bit overwhelming at first but you get used to it. I do agree with some of the other comments that somebody with mobility issues may have trouble.
The host communicates very well. During our stay our luggage was lost and the host was very helpful and offered to help assist with getting our luggage delivered.
The only issue we had was that the washing machine was not working. However, there is a self-service laundry mat just a few minutes walk as well as a drop off laundry service just around the corner.
If you plan on staying in Rome and want to be in the heart of things and still have peace and quiet at night then this is the place. You can't beat a better host or a better flat for this location.