For properties where guests book by the room TYPE rather than the specific unit, ReservationKey configuration just got a lot easier. Now, instead of duplicating room descriptions and photos in every identical room, you just have to enter the room descriptions and photos, once, in the Room Types section. The latest blog post goes into more detail on how to set up one of these type of properties.
http://reservationkey.blogspot.com/2012/10/configuring-reservationkey-for-hotels.html