If you have time to wander into the city, let me tempt you with a few alternatives.
Jesmond Dene House is in beautiful grounds with nice walks surounding it.
http://www.jesmonddenehouse.co.uk/
I was married there last summer and had to have several trips to the restaurant to "sample" the diverse menu.
Alternatively, the Fisherman's Lodge
http://www.fishermanslodge.co.uk/ is also good.
If you want some good modern Indian cuisine, my favorite restaurant at the minute is Raval on the Quayside
http://www.ravaluk.com/
I work only a few miles out from the airport in Gosforth but I'm hard pushed to think of a "decent" restaurant locally other than Close House. Mostly cheap and cheerful Italians and Indians.
We do enjoy a trip to the Toby Carvery for a working lunch occasionally though :-)