We stayed at the Hotel Sterrenberg in Otterlo a couple of years ago and were quite happy. The rooms were spacious and well maintained. The building itself and decor are modern, the staff were friendly and helpful. When we overshot the hotel on the small bus that we picked up on our arrival, the driver turned around and dropped us at the front door 🙂 It was an easy walk to the national park, free bikes and the KM Museum. We spent the next day at the open air museum in Arnhem which we reached easily by bus again. We had breakfast with the hotel but walked into the small town for dinner….the choices were fairly limited but fine enough for us. I would recommend it without hesitation Strangely, we had no idea they offered a spa until I just looked. Not our thing. Safe travels. It was a terrific few days, pleasant and easy.