The apartment is clean, fairly spacious and nicely decorated, and the bed is comfortable with good sheets and pillows. A good shower and towels. AC worked very well in upper 80s weather. Our host's representative Laura was extremely helpful to us on arrival and in resolving some difficulties.
It's in a really central location, close to everything but on a side street so it was quiet. The Corso is just steps away and you can get the metro at Spagna after a short walk. Note that the lift is tiny and may be uncomfortable for big people. With luggage it is a one-person lift, two can fit at other times. Overall a convenient, functional base for exploring.