The best venue is the gym's aerobics room, including the floor, walls and atmosphere. It is very professional and looks like a sample of practice. If there are no conditions, find a place with a wooden floor, which must be wooden, not slippery and slightly soft, so as to reduce the damage to various parts of the body during training. Of course, the tile floor is also ok (if you are not afraid of breaking bones, hehe), and it is best not to have furniture on the wall. Say so much first, and then ask specific questions if you don't understand.