How big should a great room be?
Beside this, what is the average size of a great room?
The great room lives up to its name, and is the largest room in the home by far at an average of 550 square feet. Interestingly, the size of the great room does not substantially change with the home's size. In small homes the average was 487 square feet, and in medium homes it was unchanged at 481 square feet.
Also asked, what is a good sized bedroom?
Allow an area of at least 8 by 8 feet in addition to your requirements for the beds, dressers and chests. You more likely will need an area that is 10 by 10 feet. A rectangular room that's 21 feet long and 14 feet wide will accommodate a bedroom with a king-size bed and a sitting area.
With 400 sq ft, this size also allows for space for a meeting room. 100 sq ft of that space (a 10 x 10 space) provides plenty of room to seat 4 comfortably.