Typically a bedroom has to have these features; a window, a closet, and a door. One of the windows cannot be more than 44" from the floor and must allow egress, 3' x 5' for example.
10 by 10
That depends on the house and the master bedroom in question. There is no fixed size, any bedroom can be designated as the "master bedroom" - it is a marketing term, not a specific building code.
The decor and layout of a bedroom.
no
Hire an architect and take the plans to your local building code authorities for review. Then get bids from contractors, unless you think you can do it yourself.
Would seem to be a bit impractical, but I know of no building code that it violates.
In Colorado, a bedroom is generally defined as a room that is designed for sleeping and typically includes a window for natural light and ventilation, as well as a closet or space for personal belongings. Building codes may specify minimum dimensions and egress requirements for safety. The specific definition can vary slightly depending on local building regulations and zoning laws.
It really depends on which state your from. It's not in the building code in Cali or Texas. However, in real estate terms, that bedroom needs a closet to count as a bedroom.
In Washington State, the building code defines a bedroom as a room that is designated for sleeping purposes and meets specific criteria. It typically must have at least 70 square feet of floor area, a minimum ceiling height of 7 feet, and at least one operable window for natural light and ventilation. Additionally, it should have a door for privacy and access. Local jurisdictions may have additional requirements, so it's essential to check local codes for any variations.
A mess! A children's bedroom is sometimes called a nursery.
an opening to a stadium thru witch people enter and exit
Depending upon where you live, the building code, fire code, and life safety code appropriate for your occupancy (single family dwelling, multi-family, apartment, institution, dormitory, etc) will tell you whether this is a permitted structure. Your municipal building official may be able to help you.