Giulio's place is very well located - we walked to everything! It was clean and had a nice shower. (Very important to me while traveling.) You'll need cash for the tax that he charges, which we of course forgot to set aside cash for the tax charge end of our trip, so that was kinda stressful trying to scrounge up at 5am the morning we had to be at the airport. (I would suggest adding this to the online booking fee so guests don't have to worry about it.)
Check in is kind of confusing - Make sure you locate the instructions in the app before arriving!
All in all, this is a great, clean, spacious place to stay while in Rome!