The location is excellent!
Upon the arrival there was wine and some sweets waiting for us and also there were some products in the fridge. Everything was clean, however you have to take into account, that this apartment is quite old with the wooden floor, so if someone wakes up earlier than you, you will hear him/her walking immediately. And also in the morning there are pigeons on the roof, so the noise from them can be another reason why you might wake up a bit earlier that you want to.
But these are just tiny details and the overall experience was great and I would definitely recommend this apartment if you want to live like local in Barcelona!