The apartment is spacious, well organized and nicely decorated. The location is full of amazing bars and restaurants. You can easly find good grocery stores pretty close to the apartment as well. Another positive aspect that is worth highlighting is that the hosts are polite and accessible.
The only negative aspect (which is more related to the historic center of Seville than to the apartment itself) is that it is virtualy impossible to find a public parking near the apartment. In addition to that, the private parkings close to it are pretty expensive and not well organized. So if you are going by car I would recommend to park far away from it and get a public transport or a taxi (and similar transportations).