Barcelona is the land of extra fees. We have extra fees for everything! I only ask for a check in fee between 20:00-8:00, but of course only charge if someone checks in during those times. Also, this is what my property manager charges me. They other VERY common fee is extra person, especially in larger flats.
The above incident really annoyed me bc I was charged the fee even though I knew we would arrive before the free check in cut off period, then the check in person was 2hrs late!!
Also @sylvainbg at the time 2012 24/7 check in was not an ammentity you couldnfilter by. Plus, given the party crowd that decends on Barcelona in the Summer, 99% of hosts do a physical check in to try and detour any raucous behavior.