The apartment is perfect for 1 couple. We stayed 4 nights with my wife in January. The apartment was clean and comfortable. The best thing about it was the location. In 5-10-15 minutes walk you can reach nearly every historical building. Phanteon, Trevi Fountain, Colosseum, Piazza Navona, etc. The Vatican is 20 minutes walk.
Near the apartment you find Piazza Campo De' Fiori with restaurants, bars. Also 2 minutes walk are 3 small markets (Carrefour, Coop)
You can find also parking space, but it is better to have a small car. We parked the car the first day and left there 4 days. There was no problem.
Definitely would stay here again.