Overall we had a very good stay at the apartment. We booked it primarily because of location as we had been to Barcelona before and knew we wanted to stay near Paseo de Gracia and the apartment is only 2 blocks away. Location was ideal and you can catch the bus 24 right on Gracia to get to Guell Park and Plaza Catalunya among other places.
Apartment was very well cleaned and looks just like photos. Spacious and nice modern decor. Kitchen was also nice and large.
My one complaint are the mattresses. All were very hard and uncomfortable and I had to hear complaints from my family that they weren't sleeping well and having back pains. Master bedroom mattress was very flimsy and hard and you could feel all the springs in it. We were only there for 3 days so we could deal with this but not sure we would have lasted longer than that on the beds.
Host was kind enough to allow us to check in earlier than 4pm which was great because we were able to get settled in and nap so we appreciated this!
AC worked great which is not easy to find in Europe. Building was quiet and well maintained.
FYI- They will charge you some type of tax fee per person when you check in that they said they have not been able to add in to Airbnb so we had to give an extra $30 euro on arrival. Not a big deal but something to be aware of.
Tip to host- Add some kind of hanging shelves in showers as there was no where to put our shampoos and soaps other than floor.