We were 3 friends who stayed here and you will not get a better location I am quite sure, it was perfect to access everything you could want to see and do in Rome. The apartment is clean and the 2 main bedrooms are beautiful, the third is probably better suited to children as it is up a spiral stair case, on a mezzanine floor with no real privacy from the main area. Not a problem for us but might be for a couple. It also had no clothes storage - or plugs if you need to use an adaptor from the UK as the only one up here is tightly positioned behind a metal post (not a problem for us). The lift up to the apartment is tiny - 2 little people max or 1 and suitcases.
There was a bit of noise on the first night - a Saturday - but then it is a city so what can you expect? The rest of the time just normal city noises at night although the recycling man can be a be lively when he collects his bottles in the middle of the night - I'm a light sleeper!
The apartment has everything you need - do bring your own toiletries as there were only tiny ones which are great until you can but some cheap stuff at a supermarket which is really close.
The apartment is on the main road straight down from the Justice Building, across the road from Piazza Navona for when you are looking for it and there is a taxi rank just opposite - really handy!
Alessia and Roberto replied to all my daft questions promptly by text which was great.
It is a bit smaller than we expected from the photos, could be a bit of a squeeze for 8 grown ups but we had the best time and was amazing value for money and if I could live there I certainly would!