Overall great experience at Carmen & Naima's place in Barcelona...
Highlights:
Location is fantastic... Right in the gothic quarter, with easy access to El Born, La Rambla, Barcelonetta... Couldn't ask for a better place as a home base.
The roofdeck is fantastic! Great place for a glass of wine and relaxing. Magical spot.
The rooms are fine, nothing fancy... There are three rooms, two with full size beds, and one with a very small child size bed. One of the rooms is on the lower floor, only separated from the living room by sheets. This wasn't a problem for us, but wasn't totally clear from the pictures when we booked, though I think there are some new pics up that clarify this.
The kitchen and bathroom are nice for a building this old... our only issue was with the shower, which is pretty tiny.
The one issue for some travelers here would be the stairs... They are very narrow and steep, and were tough to bring suitcases up. It's really 5 full flights to the apartment, and then another two within the place (to get to the upstairs bedrooms and roof), so if you have trouble with stairs, look elsewhere for sure. We just treated it as extra excercise.
Overall great experience, and I'd stay again just for the awesome roof terrace.