Parking at the hotel during your stay is free. The car park is uncovered, but has CCTV to keep your car safe. Any additional parking is chargeable, but Holiday Extras offer parking packages that combine a hotel stay with parking elsewhere.
Gatwick's Long Stay South car park is just a 7-minute drive from the White House and is, itself, just 5 minutes from the terminal. The car park has automatic number plate recognition, so take a ticket at the barrier, which will lift when it recognises your number plate, then just wait at the bus stop for the transfer bus to the South terminal. Your car will be protected by a high security fence, regular patrols and CCTV, while you're away and has been awarded the police Park Mark for secure parking.