The best thing about this studio is the location of it. Just at the center of the city - you will be able to reach everything by foot.
However, the apartment is extremely noisy; we were unlucky with our neighbors, and sleeping, even with the earplugs in, was a struggle (we are not light sleepers too).
Things such as bedside lights were broken and not working. Cleanliness could be improved as well.
The studio looks bigger in the pictures than it actually is, but it should not be an issue for a short stay.
Having that said - an ok place for a short stay if you are planning to explore Barcelona on foot.