Friendly environments but not much 'action'.
Action Sauna is known for having the largest nude area in Hong Kong, towel-free darkroom. It is near the Ladies' Market on Argyle. The space gets busy from around 11pm, particularly on Fridays and Saturdays — but unlike the snooty hipster watering holes in and around Sheung Wan, the dress code here is a decidedly relaxed one shorts are OK. Small place but very crowded on the weekends with more patrons standing outside the bars socialize than those in the bar.
Despite smoking being banned in bars in Hong Kong, at least half the bar was puffing away.