I'm arriving in London at 3pm on Sunday and I depart for Hamburg at 7am the following Monday. I've never been to Europe. I'm from Southern California. I'm 19. I will be alone. Should I just hang out at the airport? Should I go explore? If I opt to stay at the airport, should I just sleep in a chair somewhere? Or should I rent a room at Yotel? Would it be cheaper for me to rent a hotel in the city? Ahh! I don't know what to do! Please help. Thanks.