Karla's apartment has a great location. Walking distance from Plaza Catalunya and Las Ramblas. Subway station is about 50 meters away, very easy to walk around. I was there on summer time, temperature was high and I missed AC to sleep better, however it was my fault I didn't notice it was not available. It is one bathroom for everyone (there were around 7 people), but bathroom is always very clean ( I wonder if Karla had someone cleaning it all the time). Karla is a great host and made the stay very pleasant.