I've stayed here on business several times now, and it's always consistently good - staff are friendly and helpful, plenty of parking available, and rooms are very spacious, clean and in good order, rates are reasonable also (on the dates I've stayed - I know they can be significantly more on peak dates for the park). The only reason my eating has gone down slightly is because they no longer provide breakfast boxes, for you to take away your breakfast.
I don't have time to stay and eat, I want to just grab and go and eat when convenient for me. Having no box meant I couldn't do that and had to then pay for breakfast separately. Luckily, I had have a small tub with me, so managed to get some fruit and yoghurt, but it wasn't the breakfast I was expecting, wanted, or had paid for, in the inclusive price.
Not good service, Chessington - bring back the breakfast boxes for those of us staying on business, particularly as we generally travel alone and thus aren't eating the amount an entire family would, staying in one room