Best Western The Watermill Hotel, one of the finest modern Hotels in Hemel Hempstead is built around an old flour mill and offers excellent accommodations in Hemel Hempstead with a panoramic view of River Bulbourne threading through the property. Experience a serene, Old World retreat from bustling city life in this picturesque modern hotel. A convenient getaway venue with plenty of spacious free car parking. Watermill also offers wonderful amenities and hospitality for a relaxing stay, with convenient access to the area's tourist, industrial and commercial centres.