We stayed in this hotel for three nights and the location is great, a couple of minutes from the Trevi Fountain and round the corner from the Barberini metro stop. The room was small and could have done with being refurbished but was very clean.
The main problem was that the air conditioning didn't work very well and even after the hotel had allegedly attended to it it was still unbearable and made night times uncomfortable and the street was too noisy to have the window open.
The breakfast is average at best and the staff stony faced. There are two lifts but one only goes to the third floor and the other is not for the claustrophobic, but is really quite quaint.
Given the cost of hotels in Rome it was ok for the money but in other cities for the price we would have expected a lot more

We were in room 405, five floors above Via Rasella, for 13 nights, and it was much quieter than I expected. Everyone on the staff is efficient and friendly. The breakfast is copious: meats, eggs, yogurt, cheese, pastries, fruit, juices, and more; capuccino is made if you ask. There is a new spacious elevator for most floors; we had to use the little one up the stairwell but found it a fun reminder of earlier days. A couple of small problems were promptly fixed. The room was very spacious by Rome standards. If you ask me, any complaints I have read are quite absurd. I paid a lot more than I am used to, but the pleasure and comfort as well as the location made it worth it. The restaurant (Hostaria) 50 feet from the door is so good that you should make reservations if you expect to eat there at night; many people are turned away; excellent and cheap house wines and other items comparable in price to lesser restaurants. There are also two other restaurants to either side that are not bad but not so good. A taxi ride to the hotel with bag charges and tip from the Termini is less than 10 euros, so you can take the fast train to or from from the airport and get there in less than an hour. Maybe we were just lucky, but I have never enjoyed a hotel stay anywhere else as much as this. But watch out for motorcyles everywhere the minute you step outside!

We stayed at the Hotel De Petris in August 08 and upon arrival had the shock of our lives when faced with the antique lift wondering whether it would hold 2 people with their cases. Didn't fancy lugging the cases to the 4th floor so thought we'd risk the lift. After the initial shock the lift became part and parcel of our stay and we laughed our socks off when we got in and out after all 4 of us standing in a row pressed against the side and the wall of the lift. The rooms were smal but okay if you were not spending much time in them. Bathroom had a shower but no bath and was not big enough to swing a mouse let alone a cat. The breakfast was excellent and filled you up for a long day of sightseeing. The hotel was in a great location close to Barberini square where you could catch numerous buses to see all the sights such as St Peters Square and the Vatican. The hotel was within walking distance of the Trevi Fountain, Colosseum and the Spanish Steps. Would deifinately go back to Rome but would probably try anothe hotel just for the experience.

This hotel was a gem. It was clean, the room was incredibly large for Rome standards, had all the necessities including aircon, fridge, good breakfast. It was located very close to the Trevi fountain which we loved. Also, check out Colline Emiliano restaurant nearby for a true Italian meal.