The good: the apartment is centrally located close to las ramblas and has an elevator to help you get your luggage up to the apartment. It is fairly inexpensive for a fairly large space and we appreciated that. My, the host, couldn't meet us and had a friend check us in. She was late (more on that later) but very nice.
The bad: I'm not one to complain or write a long winded review almost ever but unfortunately our experience here necessitates one. The friend of our host who was responsible for checking us in was not able to meet us at the time we said we'd be coming which wasn't too bad but she ended up arriving hours later than she said she'd be there. We were stuck wandering around with our bags for a long while. When we finally entered the apartment it was full of trash and the bathroom and kitchen were filthy. The host's friend was apologetic and nice but she hardly cleaned the place and we ended up having to do a fair bit of cleaning ourselves. I'm sure this is partly due to the uncleanliness of the prior guests but it should have been cleaned before we arrived. It was pretty noisy at night but that would be the fault of the neighbors and their dog.
Overall, it is a good, convenient, cheap place to stay and I can imagine it would be well worth it had it not been filthy but I can only write about our particular experience.