We stayed for 5 nights in the Marconi in August 2008 and thoroughly enjoyed ourselves. If you have money to spare you would probably prefer to stay somewhere more central as the termini area is a bit "rough", although not half as bad as some people have described and I never felt unsafe.
We booked with Hotel Connect and got 5 nights for £240.00 (bed and breakfast at Marconi) - absolute bargain.

The hotel is about a 2 minute walk from the termini and 20 minute walk from the Colossuem. We hardly ever used the metro as is was so nice to walk everywhere.

The Marconi was very clean, and the staff very helpful when we asked any questions. The room was not too small either and the bathrroms looked quite new. It has tea/coffee making facilities, a safe, a hairdryer, TV, radio and a mini fridge which is a great touch - we bought drinks from local stores and stored them to keep cool. the drinks they supply in the mini fridge were about 2 Euro each - which actually is not bad considering prices in Rome generally! The air-con worked and there was plenty of wardrobe/drawer space for clothes etc. Beds perfectly comfy and we never had any problems with noise from other guests or outside.

Also they supply great maps of Rome for free in reception- better than any of the ones the guide books we bought had.

Breakfasts were good - bread, croissants, youghurt, cereal, fruit, tea, coffee, juice, ham, cheese - what more could you want.?

I would absolutely reccomend Marconi Hotel and would definitely stay there again.

Stayed on a one night break en route to elsewhere. Hotel was clean, beds comfortable, aircon good and even though we were on the first floor excellent double glazing blocked out any traffic noise.

Having been to Rome a couple of times before I was a bit dubious about staying so close to the station but there was no need as the area felt perfectly safe.

Room itself was dark (in Pais that would be "charming") but adequate and was pleasantly surprised by minibar, safe in room and bath.

If I wanted somewhere to stay in Rome for a reasonable price to use as a base and a decent night's sleep then I would definitely choose to stay here again.

Me and my husband went a small get-away break to Rome and stayed at the Marconi Hotel in Rome city centre.

The rooms are small there - but thats standard in the city centre.
The room was clean and basic. We spent all day out sight-seeing. It was lovely.
The hotel staff were very helpful and friendly.
We think we got great value for our money spent here and when we return to rome in the future we would msot definatly be staying Marconi hotel.

The bathroom was small but very clean. The bedrooms were cleaned daily, fresh sheets and towels.
We had breakfast there which was basic continental but again it was fine as there were so many places where you could grab a snack. The hotel was a great base and recommend it to anyone who is planning a trip in Rome for sight seeing.

For a 3 star hotel the Marconi was very good. Very clean, good size rooms with a safe in the room which is a must in Rome so you can leave some money/credit cards behind when you go out for the day. Was concerned about some of the reports of noise and the Terminii area being rough but the hotel is only a short walk from the Terminii which is great as a tourist because it means you can get around very easy. Stayed for 5 days towards end of February and we did see some beggars but no more than in the rest of Rome. Didn't come across any incidents with Pickpockets or Gypsies. Breakfast was very good with a good selection and if certain foods ran out they were always replenished promptly. Good restaurant, frequented by locals, just around the corner if you don't want to travel too far in the evening. Would stay there again, no problem.