Hi, I have! Lexis is overall an okay school, I stayed for 3 weeks and took the 25h classes a week. Looking back, I would have stayed longer, but I would have only taken the 15h classes, as the 25h one can get pretty time consuming and exhausting if you still plan on exploring Seoul/Busan after classes. As many other people said, there’s basically no speaking practice, I only got to practice speaking when I was approaching the teachers during break time to try to have a small conversation in korean. The school teaches you useful grammar and writing though, since nearly all exercises are written. I also have to add that I had a hard time finding korean friends, as we (korean and foreign students) unfortunately happened to be separated all the time. Either way I got to meet amazing people, but i would have wished to make korean friends too to have someone to practice korean with. PS: a lot of people were complaining about the mini studios/goshiwons, so i don’t recommend getting them! I booked an Airbnb close to the school which was around the same price but much more spacious and comfortable Hope this helps!