Here are just some pictures to help you guys kinda understand what the Akatsuki's hideout looks like.

The Hideout:

The Kitchen:

(One of) The Bathroom(s):

Living Room:

Taki, Deidara, and Tobi's bedroom:

Zetsu's Garden:

Of course, this is only how I imagined it. You can imagine the hideout to look however you want.