Well-appointed spot in a great location. Helpful hosts. Nothing much to add that others haven't already. Wish we'd had another night to stay!
Our own recs:
Moa Kitchen has fantastic food and a lovely staff.
Waimea Coffee Company had excellent coffee and drinks, and solid lunch fare.
Right next door is the Waimea General Store, which had some great items.
In the opposite direction, Tex Drive-In is a tourist legend. Get the donuts (malasadas) on your way to Waipi'o Valley, but skip the rest of the food.
Take some time to drive 250 between Waimea and Kapaau. It's gorgeous.