Perfect location in the heart of the city. Really good connections with L1 subway and quite close to plaza catalunya which is a very good hub to move around the city. Groceries stores right in front of the appartment and a lot of other services available close by.
Noise could be an issue rather if from street traffic or surroundings apartments renovations, quite common as I could see in this region in downtown.
Anyway, regarding the host and the apartment itself nothing to point out negatively. Julia was very supportive during our stay. Very good communication.
I definitely recommend.