No full knowledge of their partner
I don't think they have full knowledge of the services that their hotel/accommodation partners has. I booked through them with a pension house. They've rejected my request to check in at 8 pm for the reason that the pension's house check in time are only up to 6 pm and beyond that no one can accommodate me. When I got to the pension house on the next day of the booking (I've booked for 3 days - got there on the 2nd day of the booking), I talked to the front desk and what do you know, they're front desk is open 24 hours!