HOSTEL ALOHA does not accept group bookings. In order to keep our nice atmosphere we prefere to host from 1 to 3 people per booking. There are plenty of Hostels in Berlin that are designed to host big groups. Here are some of them:  

Hostel Bookers group Booking http://www.hostelbookers.com/groupbkg/

Wombat's Hostel www.wombats-hostels.com/berlin

Meininger-hostels www.meininger-hotels.com

A&O Hostel www.aohostels.com

Circus Hostel/Hostel www.circus-berlin.de/

Generator Hostel www.generatorhostels.com/en/berlin/

Saint Christopher's Hostel www.st-christophers.co.uk/berlin-hostels

Plus Hostel www.plushostels.com/plusberlin

City Hostel www.cityhostel-berlin.com/

BaxPax Hostel www.baxpax.de/

Industrieplalast Hostel www.ip-hostel.com/

City Stay Hostel www.citystay.de/

Find more Hostel at:  

Hostel Bookers http://www.hostelbookers.com/hostels/germany/berlin/

Hostels Club http://www.hostelsclub.com/city-en-137-Berlin.html

Hostel World www.hostelworld.com/hostels/Berlin/