ok i found lairs with for example
5x5x6 (sounds like the best for me)
6x4x6
5x4x7
4x3x10

all is multiplied with 24 so a 5x5x6 lair is 120x120x144

what is best to put lairs/halls in it? i dont want a grand hall but i fear that 5x4x7 or 4x3x10 is not very handy

i dont like lost space because my lair got a bad format

anyone here has not a 5x5x6 lair and can tell us his experiences please?