Is central Leeds too far? Are you driving? It's 5.5 miles but as you'd be going in the opposite direction to rush hour traffic it might be ok...
42 The Calls, Leeds - I'm not sure how the costs look nowadays but when I used to work in Leeds this was my accommodation of choice :) It was fairly new then and had the most fantastic steak restaurant next door which I understand was closed during the foot and mouth epidemic. I'm not sure if they ever reopened!
I once stayed at Oulton Hall too - however I arrived at 10pm and left again at 6am so I really can't say much other than the bed was very comfortable, the shower was excellent, and the night porter very helpful. I'm sure it's lovely in daylight