The location is what makes this place so great--right in the heart of old Sevilla. I thought when we approached the building that it would be noisy, since the plaza was full of people and was quite loud, but to my pleasant surprise, we couldn't hear a thing in the apartment--it helps that the apartment faces the back side of the building. Lovely views of the cathedral from the master bedroom.
The only drawbacks were very minor. The water pressure in the shower is terrible, but I doubt there is much the host can do about that. And the stove does not have an electric igniter for the gas--you have to use a lighter or matches--and there were none in the apartment. We don't travel with matches or a lighter, so we had to go out and buy some before we could use the stove. Not a big deal, but it would be nice to make sure there are some on hand for the guests in the future.
Overall, this place was excellent and we'd be happy to stay here again.