Beautiful path over the lake, but currently very afforested. I do not know how it was before, but seems to be upgraded to a forest highway at present. On the opposite bank of the trail we liked better :-) is still necessary to circumnavigate it!
We did this little hike with a 5 year old child. There are ships on the Plansee every hour. It started from Seespitz on a really great path that has a lot to offer. When we arrived at the Hotel Forelle we had lunch which was really delicious. Back by boat.