Are we talking about the F or J lounge here?
The F side is just a separate seating area apart from the fact that there is a menu which usually has some hot dishes on offer. The sofas are more comfy than the J side. The J side has dim sum, cup noodles and the usual crisps/fruits/nuts offerings.
Shower facilities are available IIRC although I've never used them. Both sides each have 6 desktops.