I don't even know where to begin, this place is just incredible. Contact with the reception staff was available all the time and all my questions were replied to quickly throughout our stay. They agreed with no problems to store our luggage after check out as we had a late Flight.
The apartment itself is right in the heart of the city, you are a stones throw (literally) from Castel St.Angelo, 10 minutes from the Vatican, 6 minutes to piazza Novanna etc. You literally couldn't get a better location if you tried. The apartment is huge, very very clean and really pretty. It has its own kitchenette which came in handy as breakfast in Rome isn't our favourite! I can't understand why it was so cheap, it was worth every penny.
We couldn't recommend it more, especially if your main worry is being within walking distance of everything major in Rome.