The apartment was in a great location - about 20mins walk from Gothic Quarter, 15 mins to La Rambla and around 40 mins to the beach. There is a nice outdoor patio too (separated by a net between us and the neighbours).
The pictures suggest the apartment is a lot more cosy and homely than it is, but me and my friend aren't too fussy and didn't spend much time in the apartment anyway.
Overall, if you're looking for somewhere close to the major sites then I would recommend this apartment.
Josep the owner and Guillem were very helpful throughout the stay. Guillem responded almost immediately to any questions I had and was very helpful in the lead up to my stay there.