We were a group of 10 persons to stay in one of those houses. To my opinion, the only negative point is the price, which is not exactly cheap.
Further I can only confirm that the house is equipped with all what you need. The beds are OK. The glasses in the kitchen are a bit Dutch; they are so small that with one nip, your glass is empty. So I had two or three.
The day we arrived some light bulbs and a Neon light in the Bathroom were not working. On the next day an electrician came and everything was fixed, nice service ! We could feed the ducks on the lake and enjoyed a relaxing holiday with some trips to Amsterdam, which is a 35 min ride by car. The lady at the reception is very kind and helpful. Thanks for all !