The Best Western The Watermill hotel in Bourne End is just 3 kilometres away from the centre of Hemel Hempstead in Hertfordshire. It lies on the River Bulbourne: part of the historic Grand Union Canal. The hotel is just 40 kilometres from the centre of London, in the South East of England. The hotel itself is set across 2 storeys, and centred around an old flour mill. It boasts a delightful deck that looks out over the river, and offers a range of services such as wireless Internet access for guests.