The flat is in a great location and was exactly as pictured. Barcelona is a big city with several great areas to stay in. This flat was in one of them and many of the others were walking distance. Check in and check out were very easy.
With this flat you’re essentially dealing with a real estate company. This could be a good thing in terms of professionalism, accessibility and quick responses. However (and although they did accommodate us with a late check out by 1 hour) they may also be less flexible with some of their rules than a typical Airbnb flat.