My wife and I stayed here on the first weekend in January 2013. This was our first visit. It was convenient for visiting family who live in north London. The main building of the hotel is quirky and interesting and set in wonderful and extensive grounds, a mixture of formal gardens and woodland.
The bedroom accommodation was in a separate more modern 1980s block not even one minute's walk from the main building, where one is able to park the car directly outside. The bedroom was similar to what one might expect in a 3 or 4 star hotel and of a good size for London. The bed was large and firm, the linen clean, the bathroom was good.
There is free high speed wifi throughout the hotel which works well. Personally I regard this as a significant advantage over many other hotels where there is no wifi or access to wifi is charged at some exorbitant rate.
My only criticism would be the breakfast. We are both vegetarians and feel there should be a proper alternative to "full English breakfast". If I order scrambled eggs and mushrooms (and I am not eating the bacon, sausage and black pudding) I would expect a more substantial serving of egg and mushrooms than in fact I was given. I would also expect the waiter to come around periodically and ask if we wanted our coffee topping up. I would also expect the waiting staff to come around and remove dishes which had been used e.g. cereal bowls which were obviously empty. The breakfast serving staff were not unpleasant but seemed lacking in training. Having said that the ambience was lovely. The regular restaurant was being refurbished and breakfast was being served in the music room, a rather elaborate wood-panelled affair with a marble fireplace.
On balance I would recommend this hotel to business travellers and anyone who is visiting friends or family in north London and might otherwise stay at a travel inn type hotel. Certainly the price we paid for bed and breakfast at the beginning of January was very competitive.