The way I've heard the verse is:

The drummie is polisht, the drummie is braw
He cannae be seen for his wabbin ava
He's beezed himsell up for a photie an aa
Tae leave wi his Lola, his dearie

As to the line "aa the bricht chaumers are eerie," I'd always imagined the eerieness was because there were these brightly-lit rooms that were once full of people, sound and activity, and now the rooms still looked the same but were srangely silent and abandoned. One might have imagined ghosts when they looked in - perhaps not the ghosts of people, but of a time passed by.