Marine Resort has 19 floors, and on the 19th floor, you can obtain boxes for Xatu Appraisal, and then you go onto a warp tile to exit.
48 floors
The Nightmare has 17 floors.
The Temporal Tower has 23 floors in "Pokémon Mystery Dungeon Explorers of Darkness."
There is 20
19
=20 Floors=
48 floors
13 floors
20 floors
there are 15 floors to this dungeon and a sandstorm on floors 6,10 and 11
there are no floors........Uhhh.....There are 50 floors. :))
actually it is 11 or 12 floors