We really enjoyed our stay at Alessandro's place and highly recommend it to other visiting Rome. The space was very nice and clean, the kitchen appears very new (includes dishwasher, stove, and fridge, no microwave).
Alessandro was super helpful and flexible with our check in. The walking tour we were n went 1.5 hours longer than we expected, Alessandro was understanding and very flexible and allowed us to move our check-in time back and was even patient when we had complications with public transit making us later again.
The place is a little ways away from main Rome attractions - not in walking distance. There is a bus stop just steps outside the door making it very easy to commute. We did discover that the buses can be very unpredictable so have patience :) The place is only a 15 minute walk away from the train station when you arrive/depart which is convenient. It's not the nicest walk, may be more hesitant in the dark, but we had no problems and the apartment is on a very nice street.