The new Waldstadion, while lacking the atmosphere and character of the old one, is all the same an amazing place to visit.
I have had the pleasure of visiting the newly rebuilt stadium (though it was not yet finished when I was there) to see the home side, EIntracht, battle vainly to stay in the top flight.
As a venue for football, or any sport, this arena is unsurpassed, except by Dublin's own Croke Park.
If you want to sample real Hessian life, and appreciate Frankfurt fully, you must go to a home game, especially now that the side are fighting to escape the second division.