You should stay here! Everything about this apartment is amazing. Top floor, massive balcony overlooking a Gaudi building, what else can you possible ask for? There are tons of restaurants within walking distance and because you're on the top floor the noise from outside was very minimal, no problems with noise at all.
The apartment staff were amazing! We had some lost luggage that they really went out of the their way to help us, they could not have been better!
The only thing to be aware of is that the 3rd bedroom is very small, probably 1m wider than the bed itself. We stayed in that bedroom and didn't mind one bit.
Can't recommend this place highly enough, 5 stars!