This is a beautiful studio flat in a unique place. I have stayed in several locations in Seville and I think this is one of the best places I have stayed - both the appartment and the location. You can walk anywhere very easily, it's also near the hire bikes and the bus stops.
It is a peaceful place with no road noise. However, the flat is not sound proofed- you can hear people walking outside and I could hear the neighbour's loud air conditioning machine all night. You can also hear the fountain. So it is peaceful in general but that is the only negative. Overall I loved it.