Go for it! :)
I've been studying with GoEast since 2020. I started at Shanghai campus. I am now attending class online, even if I am back to France because I definitely wanted to keep studying with GoEast! I've had 3 different teachers and they are all great: clear explanations, adapt to student and friendly. Material to prepare classes is intuitive and allow smoothly learn new words and grammar. People at GoEast are seeking for feedback from students and very responsive to students' needs. I would highly recommend GoEast to anyone who wants to learn Mandarin!