It looks so much better painted black! Thank you so much to the people who suggested this. I wired in the fire this morning, just so I could take its photo :) You can see the Art Nouveau decoration on this piece, which was one of the things that attracted me to it. Perfect for the roombox!
The fire is the same kind I generally purchase from eBay: I was really happy to find a similar unit at the Toronto dollhouse shop. Mum loves fireplaces but doesn't have one in her condo, so I know she'll love having a tiny one she can switch on and off :)