STAY AWAY!!! I WISH I LISTENED TO THE BAD REVIEWS!!!!
This Congress Plaza Hotel is undoubtedly the worst hotel I have ever stayed in. My friends and I stayed in a family suite, and the entire suite SMELLED LIKE MOLD! It was a terrible smell. We sprayed the room with perfume and it still smelled bad. The vent had dust on it. It was impossible to control the temperature in the room, so it was always 50 degrees, but also humid at the same time. The room was so humid that the floors were wet and so were the bed sheets and pillows. The floors were FILTHY! I walked around the room without my shoes for 1 minute and my feet were BLACK. It was disgusting. As if it couldn't get any worse... THE MAID DID NOT REPLACE THE SHEETS BEFORE WE CHECKED IN AND THE SHEETS WERE STAINED!! This hotel is absolutely disgusting. Calling it an old hotel does not justify the dirty carpet, stained bed sheets, humid room, and smelly scent of mold. To make matters worse, the outlets did not work, and the lights would randomly turn on and off. Oh and the bathroom door would get stuck keeping us locked in the bathroom. 
Now, when we talked to management about all of the above problems, you know what they told us? "If you didn't like it, then you should have checked out." They did not try to make it better, offer us a different room, or even a discount. Terrible hotel and terrible customer service. STAY AWAY!!!!!!