The easiest place to see the Noh at the Nougakudo theater. If you are staying in Tokyo, then you can see at the National Noh Theatre. The National Noh Theatre is located at the center of Tokyo, so it is very convenient to get there. You can check the information here: http://www.ntj.jac.go.jp/english/access/facilities_03.html
And also some of the shrines and temples have the Noh performance as well. But it is very hard to find the information nor hard to obtain the tickets.