We stayed here for a dance competition and have done so for many years. Every year I am more disappointed than the last. This year I had booked the Summit buildings. When I arrived the put me in Building 52, which was under construction and not completed. I could overlook that, however, when we got to the room we discovered the entire building had no air conditioning. It hadn't been installed yet. The room registered 30C. I went back to ask to move and they said no, there was nothing they could do. I literally argued with them for an hour, going back and forth with one of the managers, when they finally relented and moved us to another Summit building. The fact that they knowingly checked guests into rooms without air conditioning when it was 30C is unacceptable. They knew the rooms had no air and were hot and they pretended like there was no issue. The rooms are dated and tired and in need of an upgrade. If you are there to use the lake and outdoor amenities, then stay at one of the newer condos by the water. We needed to be close to the main building. If I didn't have to be there for a specific event, I would never stay at Deerhurst.