answered about 6 months ago by alpha
It's on Lac Long Quan Street. If you're starting at the Thuy Khue end of Lac Long Quan, it will be a couple KM. Look for it on the right just after passing the section of road where one is directly next to West Lake.
I'm not certain on the details of this club, but I get the impression that it isn't all that open to general membership from community members. The main folks I saw using it were young Vietnamese training for the national rowing team. Many of them lived on the grounds or very near by. They can be seen rowing in the early morning and jogging around the lake during other parts of the day.
I also think one can do some rowing by way of the Hanoi Club, but that will probably require a membership that you may (or may not) deem a bit much for the privilege of rowing. Then again, maybe full membership isn't required.