Haus Huis'n is a nice little house for having a night in an idyllic place as Grainau. Beautiful old wooden house surrounded by gorgeous mountains. Unfortunately the family Gruener is still anchored in the past and do not have an adequate and regulated reservation system neither they state the rules they enforce in their web page. With just a call they can reserve you a room, our case last week when my wife booked two double rooms for us and friends.
Two of us became heavily sick with some stomach virus what forced us to cancel our reservation the same day of arrival. Next day my wife received a call from Mrs Gruener claiming that we should pay 30 EUR for late cancellation notice and they demanded our postal address for sending the bill, LOL.
Yes, we are fair and we agreed to give our address and pay... Nevertheless I find very unethical their behavior: claiming costs to their customers without the burden of a credit card reservation system, and not mentioning it at reservation time or in their web page.
I am sure we will find better places in the surroundings next time.