A gorgeous apartment in a fairly new block. Located just a little way out from the centre of town we found that the easiest way to get to the Cathedral and restaurants, etc was by jumping on the tram which stops about 3-4 minutes walk away from the apartment. (€1.40 for a single trip or you can get a one-day "rover" ticket for €5.00.) There is also a reasonable sized supermarket just a couple of minutes walk away.
The apartment is beautifully clean and well maintained. One small word of warning - there is a spiral staircase leading to the bedroom. We had two cases with us, one very large one and one small. The small one was easy but the larger one proved a bit challenging to get it up the stairs. Still we made it in the end! Santiago is the ideal host, having sent us information about attractions, restaurants, etc not only in Sevilla but also in the other two cities that we were visiting - Granada and Cordoba.
I'm sure that like most people, we didn't spend a lot of time in the apartment but I would certainly not hesitate to come back again.