First the great parts: Clara was incredibly helpful and gracious in getting us into the apartment, letting us checkin about an hour early and checkout an hour late. Her communications were clear and very helpful.
The apartment itself is incredibly new, and clean. Everything worked as it was supposed to except for the WiFi.
The less than good parts: The apartment is on the first floor of a building. The listing claims it is quiet, but it is not. We only stayed a single night, but verified the noise is a nightly problem with another couple who had been in the building a few nights in a row.
Directly across the street from the flat is a loud disco / bar, and a square, that fills up with people until about 2-3am. Many motorcycles get parked directly underneath the window to the flat. If you're going to stay up until 2-3am than this probably won't bother you, we were glad we had ear plugs even though we went to bed at 1am.
The wifi is also pretty much unusable. I had better luck with my SIM card and 4g. Finally, the apartment is pretty far walking from the downtown area. That could be a plus or a minus; the neighborhood felt totally safe and more like where actual Seville residents live, but it took about 30 minutes in significant heat to get to any of the major sights. It made taking a midday break nearly impossible.
If all of that had been in the description, we probably wouldn't have stayed here, and I certainly wouldn't be reporting it. Clara was great, and I truly appreciated all of her help, but I feel like it's important for the next traveler to understand what they're getting into.