If you are tired of impersonal IKEA cookie cutter Airbnbs, then this is the place for you. I really appreciated the mix of antique and new, as it represented the history of the apartment, but also didn't feel like we were staying in someone's actual home. A thin line to walk!
As for location- unbeatable. You really are steps from the Alcazar and the Cathedral, with everything you'd need within a block, but it was still quiet at night.
The hosts were friendly, and nearby if you need them, but invisible if you don't. They were very accommodating about us leaving our luggage with them before and after checkout, and were easy to reach.
Just leaving this last bit here for any other Americans who like to pack light- there's an actual dryer for laundry! Not just a washer!