Please suggest me about the hotel to stay close to all scenic places in Harbin.

To my experience, it is best to stay along or near the Central Street, which is not far from all scenic areas and the transportation to attractions and from/to airport is convenient (shuttle bus line 3 leads there). About the accommodation, I happen to know the Ibis Hotel on Zhaolin Street, and Home Inn on Youyi Road, both of which are within walking distance from Central Street.