The Mercure Hotel was great! Central location in downtown Warsawa and close to the big mall, as well as the main train, bus and metro stations. The old town is a bit of a walk from there, but it takes about 20-30 minutes and there is plenty to see along the way.
There is a nice little touch on each floor, with a shoe shine machine ready to use just outside of the elevator, which was nice. The bar is expensive compared to most bars and restos in the city, so do your drinking or eating elsewhere.
Besides that, the hotel was very easy to check in and out of, the service was great and we got what we paid for, which was a nice hotel at a reasonable rate. ENJOY!