Dandi Domus has a great location. 1 minute from the nearest metro station, 5 minutes from Termini station. Two small supermarmakets next to the door. Very close to the Coliseum and Forum Romanum - about 10 minutes on foot. Generally you can walk to the city centre ,as we did several times. Shops just around the corner.
The staff is very nice and helpful, they answear all your questions. They try to satisfy all your needs. The room was nice and clean (cleaned every day). However we weren't fully satisfied with the bathroom cleanliness, because there was some mould on the walls.
The foom is equipped with a kettle which is very helpful (they also give you tea and water) and nice. There is also a good hairdryer.
The breakfasts in the cafe just around the corner are really nice (coffe and croissant).
Generally I recommend Dandi Domus - it's a nice place in good locations.