Translation of zaghaft

I expect it towards the weekend. Will you by any chance be in Switzerland in the week from June 15 to June 19? Most importantly, I will ask you to send me your homework so that I can correct it.
I almost forgot to tell you, that the water was brown, despite of its name... Anyway, as I was already close to my next destination I went and consulted with a tourguide of Austrian travelers.
My wife joined me two hours later and everybody went to breakfast. The plan for the day was to visit a cave on one of the islands. We took smaller boats to get there as the ship was too large to approach the island.