There are a number of different types of hall, including assembly halls, concert halls, audience halls, dance halls, and sports halls. Carefully check all accompanying information together with photographs. Should the space be empty, or do you need seats for an audience? Is there a stage or mirror? What kind of floor does it have?
A classic training session works best with an absence of tables, a loose configuration of chairs, and a flipchart. Training sessions often last for more than 3 hours, so you might want to make sure that beverages are available at the venue (in the form of a water cooler, or perhaps a kettle).