concierge  is a Hotel employee who provides additional advice, recommendations, and other services to guests, such as restaurant reservations


Other definition:
Concierge is an employee whose basic task is to serve as the guest's liaison with hotel and non-hotel facilities, attractions, activities and services.
Other definition:
Concierge is the hotel staff member on call to provide guests information on nearby points of interest, provide directions, suggestions, organize transport, reservations and other useful recommendations. Usually tipped for providing good service.