Caprica

[Fretty]

Ah yes, here we go:




I don't think that's his quarters.


Here's another angle:




Man, Google has everything.

You had me curious so I had to verify it for myself by rewatching that scene (I have the entire series on my computer). 3 seconds before that scene, literally, they show Adama open the door to enter the commanders quarters (labled "Commander" on the outside, which the camera focuses in on). After he enters he quickly makes his way into that separate room which is being renovated, sees the bucket, and the rest is BSG/Adama history.