I'd definitely stay here again. The location is fantastic - literally across the street from La Lonja (famous 15th Century building), probably less than 200 yards from the water, and generally right in the middle of things. The views are just about unbeatable. I was a bit worried about noise because the area is popular for nightlife, with lots of bars and restaurants, but it was never an issue.
The host, Cecilia, was also wonderful. Our AC unit started leaking, and she immediately came with a technician to check it out and fix it.
Only 2 things to keep in mind if you're considering this place. First, the stairs are real. I counted 58 from the street up to the first floor of the apartment (bedrooms), then probably another 15 to the main level, and they are steep. Not a deal-breaker for us, but if stairs ever give you trouble, this might not be for you. Second, access to the building by car or bus is a bit of a hassle. Taxis are easy and great, but access to the street is restricted to taxis and residents, so you're out of luck in a rental car, and the airport bus doesn't stop particularly nearby.