Per our Discord chat linked below these interiors are like the one displayed there and thus their XCAS - Acoustic Space should be IntRoomStoneMediumAcousticSpace [ASPC:000C5B6D].
I ignored all that could go either way e.g. upstairs wood and downstairs stone.
https://discord.com/channels/471930020454072348/496471169793261568/1023383604274929724
AngasMillAerisHouse "Aeri's House" [CELL:0001620B]
AngasMillCommonHouse "Anga's Mill Common House" [CELL:00016209]
FalkreathBarracksJail "Falkreath Jail" [CELL:000EF324]
FalkreathCorpselightFarm "Corpselight Farm" [CELL:00013A72]
FalkreathDengeirsHall "Dengeir's House" [CELL:00013A78]
MorthalAlvasHouseCellar "Alva's Cellar" [CELL:0010CEEA]
RiverwoodGerdursHouse "Hod and Gerdur's House" [CELL:000133C7]
Here's a drag and drop esp if it's helpful:
https://drive.google.com/file/d/1_nKc9x2Ad5L_WBx4BL1K5zq3pBXXT9JT/view?usp=sharing