OK, now I know the situation a bit better......
A WEBSITE! Tell people that you are there, what facilities you offer and have clear contact details. Collect the email and answer it! Make sure that AOPA and Acukwik etc have all the info.
Reasonably priced fuel - doesn't have to be the cheapest but needs to be lower than Millionaire and their ilk.
Fair landing/parking/handling policy - not everybody wants red carpets etc and not all bills for twins/turbines are paid for with "somebody else's money".
Agreements in place with local hotels/motels for pilot rates - saves bargaining every stay!
Most of all - TELL us.