The Opera flats are located in a very hip and central part of Sevilla. A few minutes walking and you're at the Setas or by the river. Great rooftop terrace and small pool to lounge in during a sunny day. Well laid out flats, and very clean! The entire building is made up of guest accommodation (i.e., flats for tourists), so perhaps try somewhere else if you're looking for a more "local" experience.