I have noticed a lot of people are using their livingroom/diningroom combo spaces for their daycare instead of a basement. I know the concept of natural light and all that but never thought about it from any other angle. I know I run a dehumidifier in my basement just in case. We spend about an hour or a bit more down there a day and the rest of the time we are upstairs for eating, naps, and most activities as we use the tables and chairs. The basement playroom is where we do freeplay and I do individual lessons with each one based on interest and needs at the time since I deal with a mix of ability.