This is the most charming place to stay in Switzerland! The entire B&B is quirky and memorable, but of course it is the bedrooms that make it the perfect home away from home. Don't be put off by the shared bathroom. It is only shared by three rooms, and it's worth it: it's spacious and luxurious. In fact, it's much better than having a private ensuite that's cramped and uncomfortable.
The breakfast is generous and laid out so you select what you want and take it back to eat in your room, with a view of the mountains. Really, there's nothing negative I can think of to say.
I wish there were places like it in the bigger cities in Switzerland, but Thun isn't a bad base for a holiday and we'll definitely come back!