This apartment is a great location for your first time in Barcelona. It is within reasonable walking distance or a short taxi/train ride from many of the things you will want to see.
It had all the amenities we needed to be comfortable, including a coffee pot. Water pressure in the shower was very good, and the bed was comfortable.
We slept in the back bedroom with the queen bed. I am a light sleeper, so I always use ear plugs when traveling. My husband is a heavier sleeper. Neither of us was disturbed by any noise at night. We slept very well.