Our stay was wonderful. The flat is great, lovely decor and really homely. Comfortable beds, airy atmos and a good temperature. Amenities are excellent - dishwasher, washing machine, kitchen etc. The terrace is a real winner for morning workouts/stretching and for nice evening meals.
Only downside in our stay was noise. Construction next door was 8am - 6pm every week day so we had to be out the house (thankfully we had things to do and an office to go to). The area is quite studenty so we also had shouting/singing and drunken revelry throughout the early hours on quite a few nights (bring ear plugs!).
Otherwise, location is incredible. Couldn't recommend highly enough on that. Next to Bogatell station. 10 min walk to the beach. 10 min walk to Parc de Ciutadella/Arc de Troimf. 5 mins to Lidl. 20 mins to El Born. 15 mins to Poblenou. Make sure you go to CRU for great food.