I first found out about CLI from a quick google search on "Immersion programs in China". CLI showed up high on the list, and some research verified that it was legit. After doing some comparison shopping into other programs, CLI remained the best-value, best-looking program for a short-term program. Another huge perk was its excellent location in Guiling, one of the prettiest cities in China (It's also a short train ride from Guangzhou and Hong Kong).
From beginning till end, it was an unforgettable experience. After an outstanding pre-departure experience, I arrived to the CLI center Saturday afternoon and was warmly greeted by an intern - one of the local Chinese university students hired to support the CLI program. She took me up to the recreational room and I was immediately thrust into one of the almost-constant games of Mahjong. An hour later, I was invited to dinner by another student, an Australian professor-turned-expat, whose colleague was throwing a fancy dinner for him. I couldn't believe my luck, as I had the chance to participate in a traditional Chinese formal-style event, complete with excessive delicious food and generous Maotai Baijiu toasting.
One of the huge perks of CLI is that its students come from literally all walks of life. Summers and semesters tend to have far more college-aged students, but my time at CLI had a large variety of ages, professions, and backgrounds. Some of my best friends here were law students on break, professors of music and engineering, other college students, and international people from everywhere. It's a great chance to not only improve your Chinese knowledge, but also your general knowledge of the world.
The actual city itself, of course, was incredibly beautiful. There are constantly activities scheduled and planned by CLI, and an intense guide-book constantly being updated with suggestions from current and former students. Guilin is a smaller city, by Chinese standards, which means it's cheaper and more authentic than the bigger ones like Beijing or Nanjing. You can get a bao for literally 1 yuan, or some famous Guilin Mifun for 5 yuan. The CLI campus is well-situated next to a busy city street, as well as walking distance to city center and a nearby Wanda mall.
In terms of Chinese education, it's absolutely excellent. You're assigned 3 teachers: Comprehensive, Reading/Writing, and Listening/Speaking. They are personally assigned to you, with flexibility in teacher-choice and schedule, and they coordinate amongst each other to ensure you get the best education possible. Classes run from 0820-1020, 1030-1230, 1400-1600, and 1600-1800. You can use any textbook you want, but they are very strong at teaching the HSK series as well as the Integrated Chinese series.
Overall, I cannot recommend this program enough. Come check out CLI as soon as you can!