Dump the detox - Inntravel has a January deal to the bourgeois chateau of Les Trois Mousquetaires in French Flanders, which prides itself on serving regional and classic cuisine, along with a separate vegetarian menu. The handsome property is on the edge of the Flemish market town of Aire-sur-la-Lys, around 40 miles from Calais. From January 19 until February 28, you can stay three nights for the price of two for £212pp including Dover-Calais crossing with car, two nights on half board and a third night room only.

01653 617788, inntravel.co.uk.

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