Ok here's the answer 20 floors! geez.
There are 19 floors in Mt. Travail~Ninjachoco~(19)
20 i think
48 floors
A dungeon is a cave on pokemon mystery dungeon. It is a level with a series of floors/rooms and the object is to get to the end of the dungeon.
30 floors
there is thirty floors
24 floors
there are 20 floors.
40
The Nightmare has 17 floors.
50 floors
there are 15 floors to this dungeon and a sandstorm on floors 6,10 and 11