My family and I stayed in this apartment for 4 nights in December. We liked everything, we found what we needed, it was possible to cook perfectly, it was not cold. The apartment has air conditioning, so heating is possible. I would like to point out that there was not enough hot water if two people took a shower one after the other, but after a while the water warmed up again.
The location of the apartment is very good, you can walk everywhere to the main objects of the city. Near the apartment there is a bus stop to the airport. The street where the apartment is located is quite busy, you can hear noise in the evenings, but it didn't bother us.
Professional host communication.
I recommend staying here when you come to Barcelona!