The unit is well maintained, with a decently-stocked kitchen, comfortable beds, lovely bathrooms, and a large living room and foyer. The location was outstanding; walkable to both the Gothic quarter and to Sagrada Familia. We paid for parking, but to access the space required driving through a narrow passageway that was maybe 20 m long but literally 10 cm wider than our car, so getting in and out was challenging.
Getting registered with the owners was also a little challenging. Even though we paid in advance, they kept e-mailing back about arrival times, paying the city tourist tax, etc. They wanted us to use an on-line app to register and pay, but the app did not work well, requiring over a dozen e-mails trying to figure out whether or not I had actually paid. In the end, I apparently didn't pay the security deposit, and someone showed up at our door to collect it in person the morning after we arrived, waking us all up because we were all jet-lagged. Other than this, everything else about the visit went smoothly, and I would be happy to stay in this unit again (although I would prefer that the owners fix their on-line app!).