We have made a few changes, starting with my ideal that the kids will one day share a room. Then began a long and complicated forward planning discussion about beds and bedroom furniture, and the end result is that we sold our two old single beds and the boy now sleeps on a futon (awaiting the day when he will share bunks with his sister).
So…we have retained our spare room for family and friends – and in the off season its a playroom for kids and a work room for us. And currently its half empty…. I am already thinking of how I can decorate it!