A quiet space with good internet connection is the best option
It’s important your child has their sessions in a private place where they’ll feel relaxed enough to open up without feeling like they might be overheard. This could be their bedroom or another quiet room where they won’t be interrupted. Headphones will help to make the sessions feel private and will also remove the risk of any echos with the speakers.
It’s also important that you choose a room where you have a good wi-fi connection, so as close to the router as possible.
You can learn more about the technology test to ensure your internet connection is good enough here