This is an amazing apartment in an amazing location. It is quite large and we all (5+) had plenty of room. The view is amazing. This is our second trip to Barcelona and I could not imagine a more beautiful location. Of course it comes at a cost.
The location is very busy pretty much all day long. The apartment keeps out most of the clatter but there is still a constant rumble below. It does quiet down after about 11pm and the nights are generally very quiet.
That being said, we were not renting from an on-site multilingual owner but a corporation. The apartment had some issues which needed addressing. They said we could control the temperature with the NEST wall dial. We could not. It was cool and rainy when we first arrived and many mornings the apartment was at 18.5 deg. It warmed to about 20 during the day and opn very sunny days got to 21.5. They had access to the NEST and could not raise the temperature either. UNABLE to complete the review as I have maxed out the allowed data!