Basket of Pakan fruit
Pakan is the Iban name of the fruit, this is the only name I know. If anyone knows the English name it would be appreciated. Essentially this fruit is a smaller less intense version of Durian. It is similar in many aspects such as the internal structure of the fruit, the hard spiky skin and the smell. However I have to admit that the smell is no where near as bad, not sure about the taste. The outside of a ripe fruit is orange as are the edible segments inside. The tree it comes from is also smaller (10-20m) than a Durian tree and it may well be the easiest tree in the world to climb, hence at least I get some fun out of harvesting it 😉
The edible segments from inside Pakan fruit
Jędrzej's Borneo Blog 
This is interesting. In Northern Sarawak, this durian is called Nyekak.
any homestays or hostels in Pakan or Saratok. tqvm
Sorry to miss the comment earlier. I am not sure that I know the answer to that question though. Certainly you can stay in some longhouses if you have friends there or contact them earlier and ask. But I simply don’t know much about any homestays set up for the purpose.