I recently stayed at the Durham Marriott (regrettably, it was only for one night) and the experience was one that I will never forget - it was wonderful.
We stayed in a room called The Chandler Suite (I'm not entirely sure why it was called that) which comprised of a small sitting area with a television, sofa and chair, a beautiful bedroom with a queen-sized bed, dressing table, wardrobe, television and best of all Trouser press! hilarious as it also had an iron and ironing board, so not 100% sure of the neccessity of the trouser press, but we tried it out anyway. The bathroom had the usual facilities including a large jacuzzi bath and for once the complimentary cosmetics actually smelt nice - lemongrass rather than lavender, which can be a bit old-ladyish.
You could control the temperature in the rooms as well as turning on and off the air conditioning with a simple control by the door, which I thought was a thoughtful touch - the air conditioning kept the other rooms nice and cool after the bath had completely heated up the rest of the bathroom.
I ordered some icecream from room service, which was brought up promptly by a friendly member of staff, however, in the menu it said that the icecream would be £5.95, whereas it actually came to £8.45. Could the menu have been out of date? Or could that have been the charge for the icecream had I ordered it in the restaurant? Regardless, I have never paid so much for 4 scoops of icecream before, never do I ever intend to again!
We didn't eat at the restaurant of the hotel, nor drink at the bar, but we did have breakfast in the cruz brasserie, which was lovely. It was a self-serve breakfast, with different sections - cooked english, continental meats and cheeses, cereals, and baked goods. I had muffins and preserves along with some fresh fruit and a cup of tea, I can't remember what my partner had but it was of a similar amount - then the bill came. For one thing we hadn't been expecting that, because when we booked the room, we got the impression that there had been the words "breakfast included free". But now we discovered that not only wasn't the breakfast free, it cost £30 for the 2 of us! I found this slightly ridiculous, and my partner spoke to the concierge, but it seems that we had been mistaken and ended up paying through the nose for it.

The Durham Marriott also has a leisure club attachted to it including a swimming pool, fitness centre, sauna, sanarium, solarium, steam room, plunge pool, jacuzzi and tropical fun shower. Whatever the tropical fun shower might have done, I sadly didn't get to experience, as it wasn't turning on for some reason or another. The rest of the facilities were wonderful, I especially enjoyed the sauna and plunge pool, it was very refreshing!

All in all, I found staying at the Durham Marriott to be an extremely enjoyable experience, regardless of a few price hiccups, and I would be more than happy to stay here again.