Visited Osaka again this summer. Instantly impressed by the extraordinarily friendly ground staff at the airport. Immigration and customs were very efficient and I did not expect actually a smile and a warm greeting from a custom officer which I met only in Japan. Generally the airport service is one of the best I have experienced and I think this is Japanese culture. Airport was spotlessly clean and janitors were always present in the airport to clean the terminal. Facilities in the terminal were fine but what impressed me the most was the Sky View observation building where I stayed for 2 hours for plane spotting. No wonder it was very famous for its beautiful scenery and the shops were great as well with kind staff. Return flight 8 days later to Hong Kong very early in the morning (9:10 flight). There were just a few people and the terminal was quiet. Relaxing music was played which made my stay in the departure lounge extremely comfortable. Still warm smile and greeting from check in and security check staff. The other airport in Osaka Osaka Itami International Airport is almost as good as Kansai Airport. Very sufficient facilities in terms of a domestic airport very clean terminal fantastic restaurants and extremely friendly staff as well. I will not hesitate to go to both airports for hours for plane spotting and sightseeing.