Accommodation in Beijing may be tough for you if you want to save money and stay comfortable. One tip is that you may try hotels in universities. You can always get a cheap room, which is also clean and tidy. It costs like $5-20 per room per day. And if you are lucky, you can get a college student as your tour guide, which makes your travel more convenient and eliminates unnecessary troubles. For further information, you can email yahoo.com.cn|flanker1118.
May your stay in Beijing happy and comfortable.