I'll start with the staff who are super friendly and very helpful.
Unfortunately the standard of the hotel is definitely not 4 stars and we were really disappointed. It's an old hotel and I can understand renovations are challenging but we have paid a very high price (over 500gbp per night) and it felt like a waste of money. What bothered us: king size bed that in fact was 2 mattresses put together - very uncomfortable, no basic kettle / coffee machine in the room, no AC in the room, food was horrible at breakfast and despite having to book it, by the time we arrived there was barely anything left and it all looked horrible - left overs and dropped pieces of food on the buffet table not cleaned up - just disgusting frankly. The hotel smells badly in different parts of it - gives a horrible impression as you walk through it.
What we liked: beautifully maintained garden and grounds around the hotel and staff service. Sadly that's all we liked.