So I booked us into just the standard room with bed and breakfast and this was the result...
The room was huge! I've never been to a hotel where a standard room is this big! The furniture looked a little dated but it was all in keeping with the spectacular 19th century main building. These rooms are all built in a new building a minute walk from the main building where breakfast is served. The room offered a king sized bed, two sofas and a cabinet that had a TV, fridge and mini bar.
Overall I really enjoy my stay here, I think that for the money it was well worth it as you were given full access to the spa, pool, gym and fitness centre (squash courts and youth club for the little ones). I felt that the staff were a little uninterested in me, which I can get past but it would have been improved if there were a few more smiles. The rooms were kept very clean and I thought that they were well situated in the grounds as they weren't far from the breakfast room.
I would however warn you that there aren't many shops or things to do near by. Chertsey is the nearest town and it's a 15/20 minute drive away.
Let me know below if you've stayed here or if you have any recommendations for other hotels in the Surrey area.