best place to stay in beijing also not so expensive.

For the bustling areas like Wangfujing and Xidan, the accommodations will charge much more during the holiday. So I suggest you stay near Guomao metro station of line 1. The price of the accommodations can be accepatable and the transportation is quite convenient. Try to book the Ruizhao Hotel (Guomao branch) or China Southern Sky Pearl Express Hotel. It costs around 300RMB or a little more (actually it is quite hard to get cheaper hotel by then). Do book rooms as soon as possible, because all hotels are in great need in the city due to the holiday.