My absolute most favorite creative space to work and enjoy a great cup of coffee is at Jirani Coffeehouse. The atmosphere is eclectic. The service is phenomenal and the event schedule is absolutely entertaining.
I highly recommend for those with small children throughout the day. The is a lot a space for children to explore particularly in the space known as the bean box. There are games and lots of books to choose from their free book exchange library.
The evening schedule varies. Please check their website for events of your interest. Jirani Coffeehouse is located in downtown manassas within walking distance from the Harris Pavillion.