In room 420, I found 2 cockroaches in the room, and the water drain in the room was blocked (I guessed due to dirt since the room hadn't been use in a long time). The staff helped to clear the drain, and also (only) swept the cockroach. I asked the room to be sprayed with insecticide, but I think they only sprayed air freshener. The air con was really hot too, seemed like only air blown out. After contemplating in the room for some time, a third cockroach appeared and I decided to insist the receptionist for room change. I moved to another room on the same floor, at least it was better than the first.