Beihai recommended!

I had a great experience at LTL Beihai - the city is great for Chinese immersion as there are very few foreigners. And the city has great weather, a laid back vibe yet has all the amenities. My teacher was great and very flexibly adjusted to my needs. I already have a somewhat substantial level, so being able to work on communication was great. The School is small so has a very familial feel and the staff is willing to help out with anything they can. Travel to Weizhou and Guilin while you are there!