Yolanda's apartment unfortunately did not leave us with the experience we expected. Although she was communicative and her daughter was very pleasant when greeting us (and even left us with some Spanish breakfast treats), we did have some issues with the place.
The air conditioning would fail about every 1.5 hours and would require us to reset the electrical fuses after each failure - after waiting about 30-45 minutes for the system to stabilize. This led to minimal sleep each night, given Seville gets extremely hot and uncomfortable without AC in the summer.
The bathroom was also not quite as clean as would have been expected, although I am not one to particularly be bothered by this, one would perhaps like to know. I also did see two small house geckos and a large spider crawling around at night, which may be a hard no for some.
That all said - the apartment is centric and close to whatever you'd want to see in Seville - be it shops, food, or historic sights.