Great place to stay! Cute and clean. It can sleep 4 people, because the couches on the first floor were pretty comfy. The restaurant on the roof of the hotel across the street, (you can see it from the apartment window) is super expensive (even by NYC standards) but worth the price. The view of the Colosseum was amazing at night.
There is a Vespa rental place right next door to the apartment and it's very cheap. Cool way to get around town.
The beds in the apartment are very firm. Perfect for people with bad backs, but my back loves a soft cushy bed, so that was the only draw back for me. I say beds, because European idea of a King Size bed, is two twin-beds pushed together.
Oh, and bring your own soap and shampoo/conditioner because this place is not a hotel so they don't provide it.