We are just back from our 3-nights stay & can only recommend this place. The top is obviously the view over the lake & the late sunset on the well visible opposite lakeside, with the beautiful trains from Luzern & Interlaken that you may observe crossing in the station of Sachseln.
Now, the apartment is just what you need for a pleasant stay in Central Switzerland, whether you are a couple like us, or a party of up to 5 or 6, you will find everything you may expect in a really well equipped place. There was even a cheese fondue equipment that we are going to use on our next stay.
You might be interested in knowing what you to do from this place. First, Sarnen is a very nice village to visit two or three times. Then, you should definitely go over to Flueli-Renft, a pilgrim place with wonderful chapels. Go up to 10’000 feet high Titlis with a top view of the Alps, if you have beautiful weather, and up to Pilatus Kulm with a wonderful view onto the lake of Luzern. Third, visit Stans, one of the nicest villages in Switzerland.