We need to get to Tianjin cruise terminal. Can you suggest a hotel close to this port from Beijing?

You must refer to the International Cruise Home Port, right? Dongjiang Tairong Seaview Hotel is a good choice, located on 22F to 24F, Building B, Dongjiang International Building, at the crossroad of Yazhou Road and Zhengzhou Road, Dongjiang Free Trade Zone.
It is about 2 miles (3km) from the port. It costs CNY 200 to 300 per night in usual time. You may dial at 86-022-25709555 to book a room.