Creative Spare Room Ideas, From a Home Library to a Swanky Lounge

If a home being built has a spare room, the default can sometimes be to turn it into a guest room or a home office, but according to marthastewart.com, there are plenty of other options that could be more beneficial to enticing homebuyers.

From a home library and a gym, to an arcade and wine room, read more to get designer-approved ideas.