I came to Keats for an intensive Mandarin course and left with far more than I expected. The setup is brilliant: students live in the same building as the school, which means you're in class within two minutes of waking up. It sounds like a small thing, but it removes all the friction and lets you focus entirely on learning.
Living alongside fellow students naturally builds a real sense of community. Evenings and weekends fill themselves: meals together, trips around Kunming, excursions into Yunnan province, which is spectacularly varied and endlessly worth exploring.
Full board is included, so food, accommodation, and classes are all taken care of under one roof. It genuinely frees your headspace.
The classes themselves are the core of it, of course, and they deliver. Small groups, plenty of interaction, and teachers who push you to actually use the language rather than just absorb it passively. My spoken Mandarin improved faster in a few weeks here than it had in months of self-study.
Highly recommended for anyone serious about learning Chinese in an immersive, well-organised environment.