Good Points:-

Room was huge - far bigger than we expected for the money.
Room was clean, water was hot etc.
Breakfast was fine as were the waiting staff.
Nice to be near Santa Maria Maggiore and several bus stops.
Some good nearby restaurants

Bad Points:-

Front of house staff very unfriendly. Just tried to look cool in their shades.
Not really in walking distance of anywhere at least not in the heat of the summer.

The hotel is well situated, but the front of house staff could not give a damn about their guests. The air conditioning was not turned on centrally, but it could not have been used in the room (401) anyway as the unit was too noisy. The room was dirty, with layers of dust, torn wallpaper, even a previous client's socks in a drawer. I was not happy that despite the official taxi rate to the airport is 40 Euro they were trying to sell it at 45 Euros. 4 star? I don't think so!

Well what can I say,
I won a Trip to Rome and this was booked by the Event Mangers, I was promised a luxuary night in Rome at a 5 star hotel.
When we arrived it looks good from the outside, However looks are very diciving we were booked for a Twin room but given a double so I asked them to split the beds and was told they would try but could take a few hours? I have taken photos as they bathroom door could shut properly as the door frame was comming away from the wall, The bedside lamps were falling apart and all the electrical wires were on display, so didn't use them, which ment the room was very dark all through out the day, Holes in the walls and the paper peeling off, the shower and toilets were well just wrong, I have stayed in a cheeper Travel Inn and got more for my money ,
Good thing is location but thats it the city is full of graphiti and frankly would good back if i was paid. There is NO WAY this is a 5 Star it should be a 2 star if that. Breakfast don't touch it and the mini bar only soft drinks the bar in the evening shuts at 10.00pm.WILL NEVER GO BACK WHAT A LET DOWN

The Gallia Hotel is in a superb location - 5 mins walk from the termini station (although I didn't realise when I arrived and got screwed by a taxi man - so be warned) 5-10 mins from pretty much everywhere else - Collosseum, Trevi Fountain etc. Hotel was very clean and very quiet. I never saw any other guests except for in the breakfast room in the morning. Room was of a standard decent size with a cheap enough mini bar. Plenty of information about local tours and sights were available at reception too.