We loved our week in Park House in mid-July. The house is charming, very clean and comfortable, and has lots of little touches to make it feel like a home rather than a holiday rental. The bathrooms and kitchen have obviously been done up recently and seem new. The kitchen is small (one cook at a time!) but very well thought out, and you have everything you need to cook at home, which we did most nights. The main bedroom has plenty of storage for clothes and a comfortable bed. We didn't use the twin bedroom except to store our suitcases, but it was very pretty. (FYI, a previous reviewer mentioned being charged for towels, but this is no longer the case.)
There are lots of guidebooks, games, puzzles, etc. plus some nice old novels. We definitely didn't need the bag of books we brought with us! We had that slightly maddening in-between weather while we were there--not cold enough to start the fire, and not warm enough to make much use of the beautiful large garden. However, we did put on the quick and efficient heating one chilly morning.
The hosts are wonderful--very welcoming and friendly, but also keen not to impose on their guests, who have exclusive use of the garden. We highly recommend visiting Castle Howard on a day that one of the hosts conducts guided tours, as she is very entertaining and knowledgeable! (Tip: If you buy your Castle Howard tickets at the tourist office in Pickering, you can save a pound or two and also the need to wait in line at the ticket office when you arrive at Castle Howard. Just walk straight from the parking lot to the house itself.)
Kirkbymoorside is a lovely little village. There is a weekly open-air market selling everything you can think of, plus a butcher, deli, fruit and veg shop with the biggest range of spices we've ever seen. There is also a small Spar and a small Co-op. You can find a large Co-op and a big Lidl in Pickering. We ended up buying most of our groceries in Helmsley, where there is a good butcher and a very well-stocked deli, plus another smallish Co-op.
The area itself is beautiful, with lots of rolling green hills, ten billion sheep, and very friendly people. All three ruined abbeys (Fountains, Byland, and Rievaulx) are well worth visits. There are many stately homes and other attractions in the area, and we barely scratched the surface, though we would highly recommend the perhaps lesser-known Shandy Hall, home of the eccentric Laurence Sterne (author of Tristam Shandy), for an interesting and unusual tour.
We can't wait to go back, and will definitely return to Park House when we do!