very sweet, relaxed dude. very helpful and welcoming. very clean place. great communication, had his mobile number, you can text him whenever you need something and he will help you as fast and good as he can. he gave a lot of good recommendations where to eat, what to expect, what places to visit. check in and out very smooth. yes it is hot and quite loud in the room but firstly I guess that is Barcelona for you, secondly after reading through the comments it was clear to expect that, so it was no surprise in any way and thirdly closing the window and turning on the AC made it at least bearable. the building itself yes it is in a bad state but again the flat itself is perfectly fine. the front door of the building being without a lock might be a thing that should be fixed. the neighbourhood itself is totally fine and not far away from center and other major points of interest.
Barcelona is an amazing city and Kristaps is a wonderful host. 5/5 would go again.