I studied in the intensive course at EasyMandarin for 3 months and it was excellent. My Chinese improved a lot and my teacher was terrific. Perfect location, right behind Jingan Temple.
It's difficult to sell your classes or switch to a different class. You have to sell to someone who has never attended the school. They won't let you switch from regular class to private tutor.
I took the intensive beginner Mandarin class here and can't recommend it. The facilities are well worn and the teaching is only OK. Elevators in the building are slow, add a 7-minute buffer.