we were in Rome during May and we rent a room from Hotel Capitol for our last day of stay. this hotel is very very very convenient to the terminal, literally 2 minutes walk from the terminal which train is the best transportation between the city and the airport, extremely easy to get on the train (you don't have to go up and down to the platform to get on to the train.) the room i had was on the 5th floor, it had hardwood floor, the good thing about it is: hardwood floor did not absorb european smoke!! carpet at other hotels which absorb all the smoke from cigarette gave me a Big Time alergy,which is very bad during your travel. (non-smoking room is a joke in Italy, no one enforces it, therefore, non-smoking room probably = smoking room, even in 5 star hotel) we had big window in the room which is cool to keep air circulating while the AC is working fine, nice small bathroom, stand up shower which is good. no tub. the room was pretty big, pretty roomy.
i will definitely stay there if i will visit Rome again, for its price, for its condition and definitely for its location being closed to the terminal. you can find all transportation you need to travel around Rome in the terminal. you don't really need to join any tour at all.