Sadie's Harry Potter-themed rental was booked for a one-night stay for two adults via Booking.com last weekend (Feb 15). <br /><br />According to Sadie, the guests permanently stained the mattress with cocoa and coffee. They also broke the sofa bed, smashed several glasses and destroyed the TV. <br /><br />Sadie runs three Harry Potter-themed properties in Watford, UK, aimed at families coming to visit the Warner Bros. Studio Tour London.
