Its simple, your master bedroom can be as big as you want it to be. It really doesn't matter what is regarded to be a large master bedroom or a small master bedroom. It simply matters that you have all the space you need and maybe a little extra, just in case.
Most commonly, master bedrooms measure around 14 feet into 14 feet. This size however, is regarded to be on the larger side. A master bedroom of 340 square feet should also be a comfortable option. It all depends on what you need really, for example, the basic amenities like a (king size!!) bed, a dresser, a drawer chest, a night stand etc. However the only thumb rule which I am aware of it, the bigger your master bedroom is the more its going to cost you.
Most commonly, master bedrooms measure around 14 feet into 14 feet. This size however, is regarded to be on the larger side. A master bedroom of 340 square feet should also be a comfortable option. It all depends on what you need really, for example, the basic amenities like a (king size!!) bed, a dresser, a drawer chest, a night stand etc. However the only thumb rule which I am aware of it, the bigger your master bedroom is the more its going to cost you.