We really enjoyed our stay in Gabriel's home. It had everything needed for a short term stay and the location was very nice and quiet.
Triana is a great area to explore, less touristy, and has a lovely food market with local products and charming ceramic shops. All main sightseeing spots are 20ish minute walk from the flat, and there was also a bus station nearby.
The check-in was very smooth and the overall communication with the host was great!
I would definitely recommend Gabriel's place, especially if you're looking to be outside of the crowded area but close enough to all important sightseeing spots.