There is a SF hotel next to the artificial lake in Beishan, which is not expensive either, but it has everything, including breakfast and elevator. It should be reasonable. Many hotels in this city are open to the public. If you live in Suifenhe, you need your ID card everywhere, so take it with you. There are only two best Suifenhe rivers, Haotebao and Shimao, and the others are not much different above 100.