I haven't operated there in over a year, but as noone else has given you an answer.
The field is actually very busy, lot of Indonesian Airlines jets, and turbo props in and out all of the time.
The main point of entry is MD NDB, if memory serves, 5500' is the holding altitude. The second NDB is PN, which brings you to runway lead in lights that bring you to the Threshold 36. 36 is the prefered runway, 18 has a lot of hills, but has an ILS, visually only do it on a clear day.
Get down early, declare visual, and proceed up the coast line to the town. Track from there to PN, but you should easily see the field from overhead town.
Typically the ATC is very accommodating, but their wx reporting can leave a lot to be desired. Exercise extreme caution in that regard.
Good luck.