The knights quarters are where the King's royal guard is allowed to lodge. The quarters are dimly lit and are generally only populated at night time. Several beds are aligned along the walls with locked trunks at the base of the beds, where the knights keep their personal belongings.
Knights Quarters, Inside Castle
mice
knight
I am a knight who has taken a solemn oath to protect the royals. My family is of noble blood and has always been charged with caring for the royalty of the kingdom. I take pride in being a knight and the honor it brings my bloodline.
This lodging is supposed to be for the King's Royal guards, whay are you doing here? Ah, please don't speak me, shiny human!  I'm just... well I'm quite hungry and I thought no one would mind if I had a look for some crust of bread or moldy cheese. Get out!  You are not allowed here, and you need to leave.  There are no food droppings here. No don't squish me!  I already lost a tale to some batty woman, it can't end like this for me! This is your last warning, leave now or I will have to use force. But.. but you've closed the door.  I can't get out!  Oh have mercy on a tiny mouse, Sir Knight.  I can be ever so useful! I am a knight and I protect the royalty, you are not currently a threat, but you are here in the Knight's Quarters where you are not allowed.  If you have a specific way to help, then expound upon it, otherwise leave [opens door] Yes, yes, this mouse can be very help, quite helpful indeed!  Oh thank you kind human.  For your goodness, I will tell you what I saw not long before you came into this room here.   All right then, what did you see? There was a man.. a sneaky man in a dark black robe.  He looked different from the other people here; they're usually loud and clanky and shiny, like you, good Knight.  He put some sort of bad smelling powder in that mug of beer, right over there, and then left very fast! Thank you, you may stay here, since you have helped...I will investigate Be careful!  Don't let it splash on you.