I've stayed at the Boomerang (spelling?) and Rumi hotels. Both a block or so off Perimeter up by Niftys. The Boomerang is more expensive but is a nice hotel with a restaurant and a small pool. Also a shuttle to walking street.
The Rumi is only about 5 years old and has nice rooms for very good prices. Just don't fall for the "free breakfast". It's was toast and instant coffee. No restaurant or swimming pool but when I stayed there my room had a little kitchenette area and was very nice for the money. Rumi is only down an alley from Niftys.