Unfortunately I had a poor experience and felt unwelcomed and cheated. Karla was quick to reply and answer my question before booking (to confirm that I could drop off my bags before check in time), but was unresponsive after I booked and arrived in Barcelona. I did not get to meet Karla and I had a hard time getting situated (I was stranded outside of the complex, etc) due to the lack of communication after my arrival. Eventually someone living in the unit let me in after I explained to him of my situation, so I did not need to seek emergency accommodation.
Also it should be noted that to my surprise, this room is in a house with multiple hostel-style rooms, all sharing a single bathroom. Although I was the only person booked for the room, I had to share the bathroom with people in the 4 other rooms. During peak season it may be the case that 20-30 people are sharing 1 bathroom which I think is unacceptable for any price.