The best 1-on-1 program, with flexible hours and curriculum

I've been going to That's Mandarin for more than a year and have noticed a significant improvement in my reading, speaking and listening comprehension (the three skills I've been working on) as a direct result of my lessons. Chinese friends and coworkers have all said they've noticed the improvement as well.

I especially recommend That's Mandarin for adults who have complicated schedules (because of work, family or school) and/or complicated past experiences with Chinese. My work schedule is flexible for three weeks of the month and very busy for one week, and That's Mandarin has been 100 percent accommodating about this, without penalizing me financially at all. Also, I have a really strange mixed bag of previous Chinese knowledge (some traditional characters, some really formal language, previously really poor verbal skills) and, because of That's Mandarin's flexible curriculum, my teachers just tailored their lessons and conversation level to my needs.

Plus, there's complimentary coffee, tea and water. Can't go wrong with that.