Great, unique accomodation for large groups! We were a group of 8 and had a great time in Amsterdam! Everything worked fine with the keys and the bikes and there was nothing missing in the warehouse. The only thing we would like to mention is that the 2 bikes we rented were not in a good condition (no light, no bicycle stand, flat tyres).
But all in all, we would recommend the warehouse and we would love to stay there again!