Possible Clues:

• It's for sweeping over everything and for dancing to someone else's tune perhaps
• Dance setting
• Dance site
• Haunted by De Valois
• Hall for dancing
• Shrub can hide everyone - hop in here?
• It's for sweeping over everything and dancing to someone else's tune perhaps
• In which the tango or the foxtrot are danced
• Place for dancing where everyone joins king in good time
• Round in the house, all ready for the dance