I just spent a week at LTL Chengdu and had a great time. We were 6 people in our class, and the level and speed of the lessons was well paced, with great insights into local culture from our teacher Wu Yi. The lessons were entertaining and fun.
I was well placed at my level. Before this, I was just at the end of HSK 3, so this was my start into HSK 4. It was very useful for me to already have learned/seen a lot of the vocabulary beforehand, which I would recommend to get most out of the lessons. My lessons focused on HSK 4 entry level. We worked based on a modern conversational Chinese book, going through the vocabulary and lessons, and also practiced the dialogues. We also got homework too, which we could complete to further strengthen our Chinese and raise our level.
Writing the characters was not a specific requirement for doing the course, which was good for me personally, since the focus was more on understanding and speaking Chinese. I really enjoyed the insights Wu Yi gave us on the local culture and important words that one just cannot learn from a book. Without him the lessons would not have been the same.
Overall it was a great experience, and I am glad I had Wu Yi as my teacher.