Stayed here during a busy convention weekend and it was one of the only hotels near the square that had rooms open.
THE GOOD: Extremely convenient location - walk to Union Square easily. The staff was very helpful and accommodating. Connected to a bar/restaurant with decent food. The room was clean, beds were comfy. Fairly quiet.
THE AVERAGE: Pretty standard hotel for being in the city. Definitely one of the more affordable hotels in the area. The elevators take FOREVER.
At the end of the day, would stay again - mostly for the convenience and price.