The address brings you to a nice and cozy gasthaus and restaurant. There is a convenient free parking across the restaurant. Once you reach it simply follow the signs.
By the way, we did not go to that restaurant because were not hungry yet, but I am pretty sure it's good, like everything in Bavaria.
There is a trail going up between hotel and restaurant which forks into two (upper view and lower view), 10-15 minutes each. The lower view from the bridge in my opinion is more impressive, but it takes an hour tops to explore both and take a couple of selfies. Definitely worth to take a break from a long drive and stretch the legs in a short hike.
If interested, you can see a few pictures and videos of Tatzelwurm Waterfall here.