We LOVED the Mini Maison! It is small, but bigger than most motels, and an excellent price! Giorgia gave us incredibly precise instructions from the train station and we didn't need to use our phone data at all. The apartment is situation in a lovely old building (though the apartment is very modern), in a great location that felt very affluent to us. Lovely for walks! It's a 10-15 min walk to the Vatican and a 10-15 subway ride to the Colosseum (Subway is 3 minute walk). The apartment was clean, beautiful, and had wonderful amenities like a large shower, balcony, little kitchen, large bed, hairdryer and air conditioning. Giorgia was accommodating and quick to answer our questions.
Heads up that the elevator is old (we got stuck in it), and it's a 6th (feels like 7th) floor apartment.