Hi Mairi,
We stayed there in March this year. As it was early on in the season we were looking for somewhere with good indoor facilities. Thurston Manor's facilities are very good. Pool, bar, games area, restaurant etc all good, clean and well looked after, as are the shower/toilet block. No complaints.
When we went it was very very windy though and I understand that the site is prone to this due to it's location and the wind coming down the fields at back and the touring area being the highest point on the park.
Unfortunately it was so windy that we lifted the kids from their beds at about 10.00pm and drove home to Dundee. I went back for the van the next day and drove home at 40mph. certainly an experience ! LOL !
I would definitely stay here again, if i could be sure that it wouldn't be windy. Hope this helps.
Cheers,
Alex.