We stayed in MDM luxury rooms for 4 night in late may and it was absolutely wonderful!
The rooms are exactly as described at the site, the staff very helpful and the location couldn't be better-next to a metro station!
Of course as a bed&breakfast you don't have service every time of the day, but we didn't really need it..

We're definetely staying there next time in Rome-the coins in trevi fountain will do their job ;)

We stayed at the MDM Rooms Rome April 2008 for three nights. The location of this property is excellent, very close to the vatican and the metro. Room was small but well presented. Bathroom lovely, the jacuzi bath was great after a long day sight seeing. Would definatly stay again and recommend.

I was absolutely thrilled with this bed and breakfast in Vatican City/ the staff were so kind. My accomodation was the least expensive and tiny. It was immaculate, well furnished, nice linens and free wifi. Two blocks from vatican museum. Study map carefully. there are good shortcuts to various vatican locations. It is a private condo. I felt safe walking the streets alone at night. Many sidewalk cafes for dinner. Next to metro....

We stayed in the MDM room's suite for 3 nights and were very impressed. Although this was not a typical hotel (a single floor in a building and without the usual facilities), it was exactly what we needed. The suite was even nicer than the photos on the website, with a free mini bar, awesome bathroom and funky lighting!
We only saw one member of staff during our stay, who was friendly when checking us in, and brought us breakfast- toast, croissants and coffee (only seemed to be available after 8.00am) this was adequate for our needs. There was an emergency contact listed at the desk.
The location was ideal for sight seeing (you cant be close to everything in such a big city, but 5 minutes stroll to the vatican and 2 minutes to a metro and therefore the whole city, isnt bad at all!) The building was located on a bustling street close to shops and a handfull of restaurants- we ate in the Iosla De Pizza, virtually next door, which served great fresh pizzas. There is a larger selection of restaurants around the centro storico, which is accesible by metro or a 30 minute stroll.
The only negative aspect came when we were leaving early on a Sunday and there was no-one around to order us a taxi or bring an early breakfast, both of which we had to sort ourselves, however this did not detract from our amazing stay.
Overall we had a fantastic time, and would definately stay there again.