Hotel Booking Software & Website

Working on a hotel website and need software that will allow hotels on the site to have an extensive admin panel that allows them to post available rooms. Only rooms posted by hotels will be searchable by our users. We want to offer each hotel and admin account. Users should be able to book available rooms, review hotels, and search availability. Hotels should be able to post available rooms, see rooms that are booked,and post hotel packages through user friendly admin panel - software would need features to avoid double booking.