We've just returned from a 2 night stay at the Grandhotel Giessbach and wow, what a place! The hotel is certainly grand and is located in the most beautiful location I've ever seen, overlooking Lake Brienz with the Giessbach falls only metres away! The staff were all very pleasant, the breakfast was great, the bar was lovely, the Les Cascades restaurant was lovely, the surrounding park and trails were truly beautiful!
However, my only complaint is that we had to pay 15CHF per night for parking. I think for the price you pay to stay at the hotel, parking should be included for that price