The best thing is that Eurostar has special deals with a number of hotels that gives you really good, I mean really really good rates if you reserve them together with your Eurostar tickets. You can go away for a quickie weekend break [pun absolutely intended] or an extended stay at fabulous hotels for half or a third of the regular prices. I selected the Boutique hotel category and the five star Stanhope Hotel immediately caught my eye. A standard room if booked through the Stanhope's website costs € 250.00 but as low as € 70.00 if booked through Eurostar. Is that not a compelling reason to take yourself off for a luxurious weekend in the land of chocolat?
If thats not enticing enough, look at the rooms... I might never leave. Notice the trompe l'oeil wallpaper? Those grand bookshelves aren't actually real. How well it blends in.
And since its summer, you can have a glass of bubbly champagne in the sun dappled interior Magnolia Garden. Alas, Louis Vuitton steam trunk not included.