Our stay at this place was good overall and I would recommend it.
First, there is 1.5 bathrooms (one is just a toilet) and the location sleeps 6. That is a lot of people for one bathroom, but we made it work among 4 of us. There were plenty of towels provided for us too. The beds are comfortable and there was a heater in every room.
Second, security is great here. We felt safe at all times. You have to unlock a gate and door to enter the building. There is an old school lift that takes you up, which is nice when you have luggage. The area is safe and out of the main touristy areas. We were able to walk to most places and there are a lot of restaurants, coffee shops and markets close by. There is a parking garage on the same block if you have a car.
Third, it has a nice and modern kitchen. We liked having a big fridge to keep water and snacks. If you plan to cook, you’ll need to buy everything (including salt, oil, etc).
My only complains would be that the floors looked dirty (parts are remodeled, so hopefully the rest gets done) and the curtains had a lot of stains on them. We also couldn’t figure out how to open the windows facing the street.
All in all, it was a good place to stay for our visit in Barcelona.