I've been knocking out some random mini-dungeon maps, and it got me thinking as to what the ideal size of a dungeon was. Not so much as in levels, but rooms and encounters (not every encounter need be with monsters or adversaries either).
I suppose it depends on how many sessions the adventure should last - one, few, some, many or a whole campaign.
How many encounters does your group "encounter" in a usual session?
How many sessions can your party last in the same dungeon adventure before getting antsy (this is probably very group specific, as some are one and done, some can spend years exploring Rappan Athuk and most probably fall somewhere in the middle)?
Does it help if the "dungeon theme" changes as your group explores different levels? Would that "keep it fresh"?
The Minotaur for Old-School Essentials
*Requirements:* Minimum STR 9, Minimum CON 9
*Prime Requisite:* STR and CON
*Hit Dice:* 1d10
*Maximum Level:* 8
*Armor:* Leather, including shield...