I personally have't gone to sauna in Zhong shan but KTV, I stay at one ofthe newer hotel by the river but the sauna girls are not good looking. I passed. I found the culture in Zhong Shan is different from CP and girls are much more conservative. When you play in KTV, be sure to ask the mamei only bring in those willing to stay overnite, otherwise by the end of the nite, you could go home by yourself. Most of them won't want to stay with client. The most may be a single shot and go back home. Only a few willing to stay overnite. cost wise, the ZS is higher than CP, CA area. Mind you the local food and restaurant is pretty ggod though.
For suana girls, go back to CP, the service, choice, and price is much better there.