My husband and I stayed at the Residence Barberini for 5 nights during our holiday to Rome.
Our suite is spacious and adequately appointed; it overlooks the courtyards behind the hotel so our sleep was not disturbed by the noise of the main street. The location is really good and the Barberini train station is only a 3-minute walk away. We found the in-room folder particularly helpful, more specifically the restaurant recommendations, as it lists the culinary highlights of Rome which is incredibly helpful given the bewildering array of Italian restaurants and cafes in the city. We ate at several of the recommended restaurants and were not disappointed at all.
Not so good points:
The air-conditioning is one of the noisiest we experienced. The same can be said of the extractor fan in the bathroom. Housekeeping is clean but, as one of the reviewers had mentioned, our toiletries were not replaced, neither were the dirty linen put in the basket and complimentary tea bags, sugar and coffee in the pantry. Lastly, it took them two days to send an iron and ironing board to the room (they only have one iron in the residence apparently).
All factors weighed up, we had a fuss-free stay and will definitely consider staying there on our return.