Concierge.com's insider take:
Not for the fainthearted, this pricey luxury option not far from the Via Veneto has all the decadent verve that we have come to expect from an Adam Tihany interior. The Israeli-American architect's heaven-and-hell theme segues from an infernal blood-red lobby to a celestial basement spa, with a chill-out room concealed behind the massive caveau door of this former bank's high-security vault. The funky rooms (in Purgatory, natch) are dominated by huge black-and-white photos of the Eternal City; it's best to push the budget here, as the classic doubles can be a little cramped. As can sometimes be the case with boutique hotels, service leans toward pretty rather than competent. The rooftop bar-restaurant is a good aperitivo refuge.