We bought this voucher planning to use it in early summer. When we contacted the hotel in April, hoping to book a date at the beginning of July, we were told we could only book 2 months in advance. So we tried again in May, only to be told the Windsor Castle tickets could only be booked in the calendar month before the visit. When we tried again in June, there was no hotel availability for any of our possible dates! We didn't see any mention of these restrictions on booking times when we bought the voucher, and it makes it difficult for people who have to arrange time off from work in advance. We finally managed to book a date in September, and had a lovely stay. The hotel room was spacious and clean with good facilities, including a fridge, and the breakfast was excellent. Although the hotel location is on an industrial estate, there is a nice riverside walk into Marlow. With a discount, this proved to be good value for money, but be aware of not being able to book too far in advance, and avoid trying to get a room while Henley Regatta or Royal Ascot is on.