When claiming a structure:
Most main buildings are enabled for an area description. Currently most 'housing' areas are not set up for descriptions as they should be private. The only exception of this is the first floor of a noble's home or town home (as their bedrooms are typically upstairs).
This description is typically only enabled for the ground floor, with a few exceptions, but you can mention the upper levels if you wish.
Area descriptions should set the mood for the room. Anything a person would notice by sight, sound, smell, or possibly touch/feel/sense. This description can be activated from anywhere in the room (it is not limited to the entry) with the !look command or by clicking the giant eye.
When picking out your area and having it decorated, it would be helpful if you have any ideas towards this description.
If you'd like to write it yourself, or have a friend write it, that is fine. If you'd like to have me or a staff member write it, that is also fine but as it will be your space, you should have some say in the atmosphere.