We stayed 5 nights and couldn't have been happier. Great location close to St Antoni Metro station, a small supermarket and various cafes. 15 minutes walk to Rambla walking street. Local recommendation: Try the cafe downstairs 3 houses to the left when you step out into the street for an awesome family run joint.
The apartment: Large and spacious living area, modern furnishings, fully equipped kitchen, small bathroom with shower. Due to the shape of the place (long corridor) only little natural light, with only two windows in the entire space (one in each bedroom). The "main" bedroom is part of the lounge area, seperated by a small room divider and curtains, which was fine for us. The bed in the "main" bedroom was a little short, so especially for tall people, the feet might stick out. Mattresses were a little bit hard but super clean bedding.. The second bedroom is facing the main street with some street noise coming up especially on weekends which could be a problem for light sleepers.
Our hosts were amazing. Since our flight got cancelled we had to re-arrange check in which was no problem for them. Also late check out was possible which was so helpful for us! Thank you! We will be back :)