"The best parts of the Hoxton were its breakfasts and personnel, plus available free boxed water. The desk staff serve as part-time concierges, and one helped us plan and execute a visit to the Castell San Marco on our last full day.
That said, the hotel is a bit out of the way for most central-Rome tourism. In our case, the disruption of the Giro di Roma (apparently Italy's version of the Tour de France, but with hordes of day bicyclists, amateurs and families) made it impossible for our driver to get to the Capitoline Museums directly, thus forcing us to make a long walk (partly subsurface along the Tiber) to get where we wanted to go.
The worst thing about the Hoxton is the plumbing. The shower consistently cycled from burning hot to cold at regular intervals, regardless of the setting of the temperature valve, and apparently regardless of the type of day. The bidet, like many in Italy, makes it hard if not impossible to wash your bum. (How can Italy be so far behind Japan, which has great working bidets even in public toilets?)"