I spent 4 nights in Rosaria appartment.
Location is just perfect if You want to stay in historical area. The Big plus of this appartment is a large Terrace / balcony where You can have diner and take your breakfast... You can even see the sea at far.
Few minus that could be easily overcome : not enough hot water for more than one shower, some wifi disconnections...
All in All we where glad to stay there.