Thank you for reading this, first of all.
What would normally be underneath a Great Hall if it was on the second floor of this castle?
And where would the bed chambers for the royal family, visiting guests, and the servants? Would it be in the curtain wall? Also, where would the bathrooms normally be?
I'm not aiming for a castle with a village inside it. I'm aiming for a castle similar to Farleigh Hungerford castle.
Thank you for all the information you may be able to submit.
You may want to examine the layouts of other castles of that era, especially the Tower of London, Dover Castle and Edinburgh Castle, particularly the Keep.
In medieval castles, the Keep was a the central building of the castle, where the Lord and his family resided, along with their closest servants, so they could be near at hand.
The area underneath the Hall was generally used for storage. The bed chambers would be on the top floor of the Keep. They didn't have bathrooms, per se. Rather they would use chamber pots or a Garderobe, which was often a small chamber with a seat and a hole in it, and a chute that directed waste outside the building.
The protocol for where visitors would sleep would generally depend on their rank. If the visitor was of higher rank, they would sleep in the owner's bed chamber. If of lower rank, they could sleep in the Hall, or even in a tent in the bailey if they had one.
Some of the grandest castles could have a special bed chamber set aside specifically for the King or Queen if they chose to visit.