Travelers visiting Los Angeles can find plenty of room to relax and entertain guests in the Penthouse Inspired by Vivienne Westwood. The new suite at the London West Hollywood hotel is scheduled to open next month, and it will be the largest in the city at 11,000 square feet. The 10th-floor, bi-level penthouse ($25,000 per night) boasts a bright and open design conceived by the British fashion designer Vivienne Westwood in partnership with Richmond Design and includes many original pieces from her interior-dec…