It was a nice cosy place, but beware of the steep stairs leading up to the mezzanine level. I did book this apartment thinking the gym was included, but turned out it was not. There's a private gym on the same street which is not linked to this property.
In terms of location, the area is a little dark and quiet in the night, but there are some nice (bit pricey) restaurants on adjacent streets. There is also a convenience store (Carrefour) nearby, where we got our essentials from. The place is very close to the Collosseum and pick-up point for BigBus Hop-on Hop-off. It is however a little far from Roma Terminii, it took us about 25 mins to walk. The property is conveniently accessible by metro (3 stations away from Terminii) and few minutes walk from Colosseo Metro station.
The property is spacious, it can easily accommodate more than 2 people, and generally very clean. We did enjoy our stay here.