The Hotel Barberini is in a great section of Rome -- if not jammed up in the oldest, best known areas with Trevi Fountain, the Pantheon, etc. It is directly across from the entrance gate to the Barberini Palace with a beautifully curated section of works -- with truly useful observations provided on nicely placed info plaques. You are close to Via Veneto - which was a highlight of "La Dolce Vita," and reserves charm from that era. The staff are cheerful and helpful. The breakfast is the best I have had - with first rate, rpt, first rate service and a breakfast room overlooking astonishing view.

Very disappointing, and I feel compelled to share my experience to prevent other travelers from being misled by the overwhelmingly positive — and, in my view, highly questionable — reviews. There is not a single aspect of my stay that reflected the standards expected of a 4-star hotel.
1. Complete Lack of Temperature Control, Guests are not permitted to regulate the air conditioner in the room. The hotel activated the air conditioning remotely without my consent on one of the coldest mornings, when it was only 7°C outside.
2. Lukewarm Water Supply - do not expect you can have hot water for shower as the you will only get lukewarm water even you turn to the max temperature.
3. Appalling Hygiene Standards - women hair on fresh towels, visible blood stains on spare duvet (needed because the room has no heating!)
4. Unacceptable Noise and Rude, Unhelpful Staff - work outside the room at 11pm, and staff was not willing to offer any help.