This. This sounds exactly like what the dude is looking for. Take your pick, but make sure to read reviews and search on forumosa. Some are better than others. TMI is worth avoiding. I did one semester at TCA before, it was decent. I’ve read good things about TLI on forumosa.
From personal experience I would recommend going to one with more asian classmates as then you will default to chinese instead of English when chatting, which is great.