A few things: on my confirmation it said check-in at 08:00 - 10:00; this was not the case.
Then it said 24/7 check-in at the hostel ("for your convenience"); hostel was closed.
Then i tried to reach the host and waited 1 hour for reply.
Then the host told me check-in at 14:00 but i could drop my luggage beforehand.
Then I went to the appartment to drop my luggage, and still had to wait until 15:30 because decontamination would take 3 hours.
The appartment was far from clean (i had a shower and put towel on ground; it was black, I'm not sure what has been done in 3 hours of decontamination).
There was 1,5 roll of toiletpaper that had already been opened.
The two frying pans were rusty and unsafe to cook with, in my opinion.
I waited almost 6 hours in a rainy Barcelona.
Only positive was the location...
Needless to say I won't recommend this appartment.