Ok this review will be a bit different. She's a k-girl SP so you don't have to use your imagination much. When I was booking, I was split between Serena and a new girl, Rosalie. In the end I decided on Serena because I was in the mood to be pampered and Rosalie was described as young but inexperienced.
When booking an Asian SP, I tend to prefer the Koreans even tho I can speak Chinese to the Chinese girls. In general, k-girls tend to be more skilled, more sensual, more professional. They are also usually well groomed (shaved) and most do not smoke. The downside is that the can come off as some what artificial. Most don't allow digits either but daty is usually clean and fun. Serena is pretty typical of most k-girls with a couple of exceptions. She allowed digits and a bit of anal play (almost got me some unintended Greek) and she didn't come across as artificial. Physically, she crossed all the T's and dots all the I's but might lose out to a younger girl like Rosalie. Honestly, I wasn't impressed with her pics and almost went with Rosalie just based on pics. I trust Vivi though and she's never steered me wrong in all the years I've used ASB. Anyway, I wasn't disappointed with Serena's looks. She does look better than her pics.
I might still try Rosalie if she's still around when I'm ready to hobby again. Apparently she's not shaved so that might be a deal breaker. Anyway, I just wanted to comment on Chinese vs Korean SPs for a bit. This is all generally speaking from my experience so take it with some salt.
Overall, I prefer Koreans for the reasons I stated above. When I book an Asian SP, I'm just there for the physical release and don't care about things like connections and chit chat. The Koreans get it. It's almost like an assembly line and they do it well. I know that I'm going to get most of not all of my check list checked, ie, non smoking, attractive, good bj skills, etc. In Serena's case, she has a set of lucsious lips that made kissing and bbbj more than memorable and she rides a mean pogo stick too.
The times I've tried Chinese, I've always come away a bit disappointed. Often, they're not pro SPs but regular girls trying to make a quick buck before going back to China. So, you will get that GFE feeling but you'll also walk away feeling a little under serviced. BJs are usually acceptable but barely. Sex with the younger ones will provide some great visuals, but they're not as participative as the Koreans. There are exceptions of course, like if you see an older Chinese SP, but then with those, you kinda get a well used feeling.