Maria was so so good. She explained everything beforehand, and the apartment is exactly as advertised.
If you're driving here, you should know it's a tiny one way street, so be careful with a bigger car, and you'll need to drop off the suitcases and then go park somewhere immediately.
Apartment is good, air con works well, but air didn't appear to come into the bedroom too well, but the rest of the flat worked very very well.
Maria left a map of things to do and see in Seville, this has some great tips on it, and was very useful.
Checkout was super easy (just close the door on your way out).
Apartment seemed genuinely clean and well taken care of, and location is very good, 5 mins to central area.