We just returned from a 4 night stay at the Holiday Inn Kensington Forum. I believe they permit some smoking rooms, but we had requested a nonsmoking room and it was fine. (My son has allergies and I'm also fairly sensitive, so nonsmoking was important to me). I didn't notice anyone smoking in the hotel at all.
We also booked on Priceline - my first time to use that service, but all my first choices were booked up or rates prohibitively expensive. I found the hotel acceptable for the $129/night we paid for a twin room. Small, reasonably clean room. Great location. But no wireless. And it took forever to raise housekeeping or reception on the phone (about 5 minutes of continuous ringing before someone picked up). Not sure I'd stay there on business or rack rate prices.