Our experience staying at Juan Carlos' apartment was excellent.
Juan Carlos was fast to respond to our questions, and when it came time to check-in we met his daughter, Fatima. She was able to accommodate a later check-in after our flight was delayed.
The apartment was the spotless - it's the cleanest one we've stayed in so far. The Air Conditioning was excellent.
The rest of the complex is also extremely clean and modern, including the saltwater pool - which was the perfect depth for our almost 4 year old son - he could touch the bottom.
The pictures we saw were taken with the blinds down, so we were happily surprised to see it's very bright throughout the day.
The location is very convenient - it's extremely quiet, but there are a few really nice restaurants one block east, and 1 block west is where the old town of Seville begins.
It's also 10 - 15 minute walk to the Alcazar entrance and Seville Cathedral.
Best of all - it's 15 minutes from the main train station (Santa Justa) which means you can get to Cordoba in about 1 hour, total, or Cadiz in about 2 hours.
We'd happily stay at Juan Carlos' home again and recommend it to friends.