If you don't mind springing for a 15 minute taxi ride, go to Marriott's LeMarigot in Santa Monica. You'll have enough time for an incredible dinner at Capo (expensive) , which is next door and perhaps a walk on the beach afterwards or before. Just another option, albeit a more costly one. You will also breathe some good fresh ocean air from your room and it will be far nicer than staying in an airport hotel.