There are several recommended onsen within an hour drive from Nagasaki airport. Here are three options:
1. Takeo Onsen - located about 45 minutes from Nagasaki airport, Takeo Onsen is a historic hot spring town that has been popular for over 1,300 years. The water here is said to have healing properties and there are many ryokans and hotels in the area that offer hot spring baths.
2. Unzen Onsen - located about an hour from Nagasaki airport, Unzen Onsen is a hot spring resort town that is surrounded by beautiful mountains. The water here is rich in minerals and is said to be effective in treating various ailments. There are many ryokans and hotels in the area that offer hot spring baths.
3. Isahaya Onsen - located about 30 minutes from Nagasaki airport, Isahaya Onsen is a small hot spring town that is known for its high-quality water. The water here is said to be soft and gentle on the skin, making it a popular choice for those with sensitive skin. There are several ryokans and hotels in the area that offer hot spring baths.