Just like Changi, KLM has no lounge in DPS. Lounge service is contracted to Premier Lounge. Compared to the old premier lounge, the new lounge seems to be smaller and a significant regression in terms of food choices.
There were less than 5 hot dishes available, one soup and some cold sandwiches available. There is a cook to order option which only serves one dish, Alfredo penne. There is a TV room, one business room and one massage corner (paid of course). Shower facility is available with amenity kit provided.
I tried to see if I can gain entry into Garuda lounge using KLM J boarding pass but alas, I was denied entry. With star alliance, I was able to gain entry into air China lounge using Singapore airlines boarding pass in PEK and similarly I was able to enter Cathay Pacific lounge in HKG using MAS boarding pass.
This lounge is also accessible using priority pass, hence it can get a bit crowded. Lounge is small and the used dishes are not cleared regularly. Food quality is mediocre at best.