I just used that lounge on 3 Nov. It is indeed a far walk from the point you clear immigration and worse still when you walk to the gate where SQ aircraft is parked - buffer at least 10 mins for that walk.
For the 1020pm depart SQ 331, the lounge was around 30-40% full when I arrived around 915pm. I left the lounge after 30mins - had instant noodles, chips and juice. There were 2 hot food items - rice and noodles, none of which were palatable to me. Assortment of cold cuts and sandwiches were avaialble but i skipped those.
Personally, this was certainly one of the poorer lounges - esp considering the far walk.