Pros: The place is exactly as advertised, no surprises. Top location, right on the Campo - easily walkable to every major Roman attraction. The terraces are lovely, quiet and get sunlight. The kitchens function well. Other reviews mention endless amounts of stairs but these are total exaggerations - what's more, the stairway is very beautiful! Boris sent us various recommendations for the local area and kindly arranged transport from the airport.
Cons: All the windows are single pane - seeing as the square it's on is lively at night, those in the bedrooms on that side of the building will suffer from the noise. The furniture, appliances and amenities are quite outdated and ought to be replaced (it's clear no one lives here). The beds are quite hard, but this may not be an issue to some. You can not stand in the shower downstairs.
All in all, a real Roman situation. We had a pleasant stay.