There is a free quality personalized accommodation finding and booking service for all parts of Dublin called Almara Accommodations Dublin (est. 1991)
They find and reserve Hostels,B&Bs and Hotels at no charge. Any size group from 1 to 100.
If people prefer they can ask for an availability search and A.A.D. will give them the contact details to reserve for themselves.
See enquiry and advice form at http://www.almarabb.com/almaraa.htm or full website at http://www.dublinaccommodationsalmara.webs.com
All reviews can be seen on the internet when the word Almara is searched.