I would give this flat a 7/10.
pros: very central location, beach 15 mins, gothic area and borne next door, ramblas 10 mins, eixample 30. The flat is very tastefully decorated, great bathroom and fully equipped. Coffee pod machine was really handy, as was the washer/drier.
Sabrina was very responsive and helpful when I wanted to book last minute due to fear of my flight being cancelled due to Covid. Check in was perfect and the flat was spotlessly clean. Overall customer service was excellent.
Cons: as others have mentioned, the flat is pretty noisy. The street outside is really busy so with the balcony doors open it's really noisy. But when you have them closed there's not much noise.
In the bedroom however you can hear the footsteps upstairs as well as the lift which goes by just outside and people walking up and down the stairs. I also had the pleasure of a rather large dog staying in the flat above barking/running around.
The bedroom is at the back of the flat so it does not have any windows/natural light (some might prefer this but I like to wake up with the sun).
Overall it was a great stay, I recommend this place if you want to be central, have a stylish flat with a great host and aren't sensitive to a bit of noise.