What is the star rating of Qingdao Haosen Mansion International Hotel?

Hello, through the website booking information, I found

Qingdao Haosen Mansion International Hotel

Address: No. 10, Hong Kong Middle Road, Shinan District, Qingdao (City Hall Diagonally opposite, Yihe International Building)

The hotel is built according to 4-star standards and has not yet been rated and listed. Opened in January 2007, it is located on floors 5-34 of Yihe International Building, with a total of 180 guest rooms (sets).

You can log on to the official website of eLong Travel to check more hotel specific information, thank you;