These spartan, wooden bungalows on stilts are basic, clean and simple, which is in harmony with the pristine location. There is no hot water and the generator goes off at 11pm every night, but then you wouldn't be staying here if such comforts were important to you. There are 2-/6-/8-berth options and they can be reserved online.
If the bungalows are reserved online, they must be paid for by bank transfer within two days or the reservation is cancelled. The only other option for staying overnight in the national park is to camp on the designated areas. The office can rent you a tent for 250B.