A cheap place to stay in Dongcheng District, Beijing?

You can find some small hotels or guesthouses, such as the Dengshikou Hotel located at the east entrance of Dengshi, the hotel opposite the 108th Road Station at the east entrance of Dengshi, and the Tiangui Hotel at the east entrance of Dengshi. Then there are the Yilan Hotel in Dongsi and the Jinha Hotel opposite Dongsi 112 Station. I know that the price of Yilan Hotel is 180 yuan a day, and the price of a small hotel is about 50 yuan a day. There are also Riyueming Hotel, which is located in the small street inside Chaoyangmen. Dongsi Hotel and so on.