Osaka International Airport mainly supports across 2 prefectures 3 cities (Itami city in Hyogo prefecture, Toyonaka and Ikeda cities in Osaka prefecture) and also known as [Itami Airport] or [Osaka Airport]. It no longer operates International flights since Kansai International Airport opened, however the official name has yet not been changed even today.
Osaka International Airport (Itami Airport) is located in the center of Keihanshin (Kyoto-Osaka-Kobe) region therefore the access is convenient. There are many hotels, restaurants and shops inside the airport and they are directly connected to the departure gates. The observation deck overlooks takeoffs and landings of the airplanes which build a sense of openness. There are many places including parks near the airport that are ideal for the view of the airport or the aircrafts. Those places are crowded on holidays with the locals with their families.
Tips for how to select a rental car service office around Osaka International Airport (Itami Airport).
When you rent a car at the Osaka International Airport (Itami Airport), you need to pick up and return the rental car from/to the rental car service office located nearby the airport. You will be travelling from the airport to a rental car service office by the courtesy car etc. TABIRAI Rental Car Company is posting the access information and the maps (on their website), therefore you can make sure the information about their service office locations and courtesy service in advance.