Nice spot if you are looking to have a decent Colosseum view. I booked it with a discount and in the end it was an OK deal. The apartment is pretty nice but minimalistic and has what you'd need on a few days stay.
One surprising thing was missing coffee for the espresso machine and when I asked the host he bluntly refused to provide any referring to some airbnb food policy, which is weird because there was instant coffee and other "food" there. So if you book this place make sure you bring your own coffee.
Otherwise it was a pleasant experience, and may be worth it if you must have that nice colosseum view.