The Radisson Blu is a good hotel located near the primary Tianjin railway station (the one that connects to Beijing via high speed rail). While close to the train station, it is somewhat far from the downtown area, which is exacerbated by the significant rush hour traffic. I stayed here for a conference which had transportation provided, which helped with the transport situation. Taxis were plentiful in absence of that.
The rooms were clean and well appointed, with nice bathrooms. The hotel restaurant had a good buffet for both breakfast and dinner (I can't speak for lunch, as I didn't eat there). This is helpful since the immediate area does not have many dining options.