The location is fantastic for exploring the city. One block up to Placa Catalunya where city tour and airport buses pick up, right on top of a Metro station with multiple lines. Be aware that La Rambla is a louder area, but if you don't mind that the city life is all happening here for sure. We found excellent restaurants in walking distance and an easy hike down to the Gothic quarter, El Born, and the old port area.
The apartment has a wonderful sun room / breakfast nook overlooking La Rambla. Nicely equipped kitchen and freshly updated bathroom. Quiet but effective air conditioning unit as well. Everything was great for us, highly recommended!