The Kohatu Flat Rock Café (formerly the Kohatu Pub) will have a few rooms available.
Tapawera Settle Motels and Campground (they are offering a group discount - email to say you are part of the HG Nationals when you book)
Tapawera Forestry Camp
Cabins may be available however owner is waiting until later in the year before committing to short term rentals.
Owner is Mitch Irvine (03) 522 4208 if you want to call him remember he is a farmer so it is best to get him after work.