Super great location! Just couple min away on foot from Piazza Navona, very close to other signtseeings and the river (where on the other side we have Vatican/Trastevere :)
There was no problem with later check-in - Mark opened the door remotely. Finally we got room nr 4 due to some problems with water drain in initially booked room - nice clean place with kettle, small fridge, though would be nice to have couple knives/forks/plates.
Recommend the place :)