Hi Janush,
Have a look at
http://www.hmc.ag This is a good start for you. HMC is a hospitality management consultancy company that liaises between the buyer and sellers of hotels. There are a number of hotels for sale listed at
http://www.hmc.ag/e/real_estate/real_estate.htm
The owner is my landlord. He is highly professional, honest and easy to talk to. As a happy tenant I can recommend his services to you. You can also check-out the website for his hotel
http://www.fafleralp.ch. I haven't been there but it looks great. If nothing else it would be worth calling him for a chat.
Best of luck with you new venture and re-location. Kind regards, Will Ellis