There is a big difference between booking accommodation for groups and for booking for individual traveller, not because the people travelling are different but because a group booking requires a lot more organisation and time, the accommodation must be able to cope with the group booking while at the same time not imposing on other guests.
For example if reception is checking in a group holiday of 40 people it can not be done the same way as individual guests, a rooming list of the group needs to be sent ahead and arrangements of how to check in also need to be made prior to the group arriving at the accommodation to make sure check in is quick and efficient, in the same way in the morning a group will need to pre-arrange a time to eat breakfast so that they can all be served simultaneously and not stop other guests from being able to eat breakfast also.

Amsterdam is one of the most popular group booking destinations in the world not only because the city centre is compact and easy to get around on foot or by tram but also because there are a lot of great value Amsterdam group accommodation in the form of hostels, budget hotels and guesthouse all offering a great base to enjoy what Amsterdam has to offer. Amsterdam is also very popular for stag group and hen parties.

Top Cities for Group Booking