The Aran Mantegna is a gorgeous hotel with large rooms and 5 star ammenities. The rooms are "high-tech" with more lights and gadgets than we knew what to do with and the staff are friendly. The one major drawback is that the location of the hotel is out of the downtown Rome core therefore a Taxi is required. On average, it took 10-15 Euro per trip to get from the hotel to a major attraction (e.g. Piazza Navona, Spanish Steps, Colosseum). There is very little surrounding the hotel but a hotel bar/restaurant etc. and a quaint little Italian restaurant across the street served us well for our 3 night stay.

for the location, food quality, price.. was not too worth it for me. internet was super expensive, not too sure whether to blame myself for bringing work with me everywhere or to blame the hotel for charging so much money for jsut one-day use.
breakfast could be better, i like my soft-boiled eggs warm and soft and my orange juice not diluted.
room was nice and clean, so no complain about that.

We stayed in this hotel as part of a Trafalgur tour. The hotel is newer and modern. Rooms were spacious and well equipped with minibar, flat screen tv and some really cool lighting. You need to play around with the lighting to see what all the numerous switches do. You need to pay for everything including Internet, tv or even music. The only things free on the tv are news channels, abt 2 channels in English. As others have commented, the bathroom door is see through and can be uncomfortble for non couples. Bahroom was decent and clean with plenty of space for hanging and storage of clothes, big vanity and sink and rain shower in bathtub. Location is not central, out of city but bus stops are nearby and we caught the bus to city no problems encountered. Not too many places to eat around the hotel and this was the annoying part. At 3 on one of the 2 days we were there, I got hungry so went to get some food. The few restaurants around the hotel were closed, siesta time I guess. The hotel dis not have room service between 2:30 to 7:00 pm I think it was. It's restaurant was not open during that time and although the bar was open, there was no bar food available. So between those hours, no food available. There is a supermarket open about 5 mins from hotel and you can get all your groceries from there including breads and cheese in case you are hungry. Staff were polite and impersonal. They should put some carpeting in the hallways as when the luggage or cleaning carts go past your door it sounds like a plane taking off. No fitness centre at hotel.

My wife and I stayed here as part of a Trafalgar tour. The hotel is very nice, very modern, large well appointed rooms (and as others have mentioned yes with cool lights - but I was more freaked out by the mirror - I still dont know if anyone was watching me..). The only issue I had (similar to most of the Trafalgar hotels) is location. It is a fair hike from Rome city. If you are on a tour it isnt a problem but if you are on your own, stay closer to Rome. But it is a very nice hotel.