We are two Norwegian students who stayed here for 4 weeks in july/august. Talked to Andy, the owner, who arranged a pick up for us at the airport and took us straight to stilts. We stayed 2 weeks in a tree house and 2 weeks in a cottage. For a short stay i would definitely reccomend the tree house for an amazing experience. The sounds from the bush and the wind from the ocean is really amazing. For longer stays the cottages are nice as they have their own bathroom and shower (although the common showers were always clean).
The staff at stilts are really wonderful and they are always happy to help with whatever is needed. The chef, Big Ray, should have two stars in the michelin guide as he makes the best food ever for a very cheap price. Try the calamari and mash - it is perfection and will keep you full for a week. The bar/restaurant area was always busy and there was always someone inviting you to have a few drinks at forty thieves or arranging a barbecue feast at Stilts.
We only had 2 visits from the monkeys during our 4 week stay so if you take precautions they will not bother you.
If you are traveling on a budget or just want to stay in a unique place different from the large commercial places in Diani then Stilts is the perfect place.
We are going back in April!