When we check in all of our guests in we let them know that we are available to them 24/7 and all they need to do is telephone us. If TJ had a problem he should have let us know. As he mentioned we are accommodating and would have done whatever it took to please him as a (website hidden) was instructed that the air conditioning unit was in the bedroom. That the thermostat is used for heat only. When TJ departed we noticed that the fan from the furnace was set to ON instead of AUTO or OFF since it is not the heating (website hidden) was pulling up stale basement air through the furnace. It would have been a quick explanation and an even quicker fix if TJ had just used the contact telephone numbers that he was provided.