Karla's appartement was clean and had a really nice atmosphere. It's a good place to stay for a solo traveler because it is easy to connect with the other people staying there. At the same time, it stays quiet and you can have a good rest.
The location is perfect for anyone who wants to visit Barcelona, next to the gotic but also to other less touristic neighborhoods such as Gracia.
I did not talk so much with the Host but it Was on me because I don't speak spanish ;). Although, It was not a problem to communicate and Karla was kind enough to let me stay longer (as it was possible at that Time)
I would definitly recommend this place.