This is a great way to spend time among the redwoods. The Redwood Treehouse is so well conceived and put together, you can truly design your own retreat for rest, recuperation, relaxation, writing, reflection. For couples the treehouse would be great too, but I was there for solo writing and recommend it very strongly for that -- give yourself as many days as you can afford/schedule to really sink into it. The spa options are a good idea if you feel inclined towards them -- read about what's there and you'll know if it will enhance your stay. Excellent experience on multiple levels.