I will arrive in Beijing on the evening of August 16. I will go on an overnight camp out on the Great Wall on August 17-18. I need a hotel room for the night of August 16 and August 18. I also need to store my luggage on August 17. Does this hotel provide luggage storage for tourists on an overnight camp out when they are staying in the hotel the night before and night after the camp out? If so, how much does it cost?