Arrived with a party on a school trip only to be told they couldn't accommodate all of us in the one building!! The person on the desk seemed surprised when we told her that we found this to be totally unacceptable. She was not in the least bit interested in our opinion. We had a total of 55 in our group and nowhere in the hotel is large enough to gather that number in one place - we told her that we would use the breakfast room which would be large enough but she angrily refused to consider this. We eventually persuaded her to place extra beds in some of the rooms to ensure we were all under the same roof but those rooms then ended up with wall to wall beds and no floor space!! The rooms themselves were poor quality and mine stank of sewage. (The smell was coming from the drain in the shower. I placed a plastic cup over the plug hole and weighed it down with a shoe to seal it. The smell disappeared after an hour with the window open fully. Next day, the maid moved the cup and the smell was back!!
One of the walls in the corridor had nails sticking out and one of our group tore her shirt on it.
We insisted the company find us alternative accommodation. We were out next day.
This is definitely not suitable for groups.

My first impression upon entering the hotel was that it was not as advertised on the website. The lobby was grim and so was the man behind reception. The room although was clean. The hotel is well located, just a short walk from Termini station. Breakfast was OK. The staff is not very welcoming. Dont expect much assistance from them. Overall I felt for the money I paid I couldve gotten a much better room at the same location. I would say this place is worth about 60 euros and not the 85 I paid here. There are many many hotels around the same area which can give you much better value. On my next visit to rome I would probably choose another hotel in the same area.

The Dei Mille is about 5 min walk from the Central Termini in a safe area. There is a good selection of restaraunts nearby. The rooms are smallish, clean and comfortable if it is not too hot. The window is double glazed to keep out street noise, however we had to leave the window open at night and wear ear plugs as they don't turn the air conditioning on until June.
The rooms and Breakfast cellar have been recently updated, though the layout of the rooms is a real maze. The WiFi zone is only on the ground floor and a fee is charged. Staff were friendly and helpful.

Even though I took these reviews with a pinch of salt ("don't stay in room 251, it's haunted", "a doll appeared in the room") I did consider that the facilities might not be great but I was totally proved wrong.

The rooms were beautifully decorated, clean and well equipped with a safe, a fridge and a beautiful ensuite bathroom. They were largely spacious and had four single beds. There was a large double shower and we were provided with plenty of toileteries daily. Our rooms were located on the first floor and we did notice that the rooms on the ground floor were considerably less attractive. They were still clean but had bunkbeds and were slightly smaller. A small sacrifice considering the location for this hotel - right next to Termini bus and metro station.

The food at breakfast was also nice and more than enough was provided.

Some negative feelings I have only concern the staff of the hotel. They never seemed to want to help and were civil at best with most of my group.

On the whole, I think this hotel was great and would definitely stay there again, however I would be requesting a room on the second floor.