Well, overall KLM on
http://www.worldairlineawards.com/Awards/world_airline_rating.htmlcomes out at #28, so not near the top of the pack...that said, they're way ahead of the US carriers for anything. KLM has been flying the route for just over 2 years now.
It has its advantages though - if you want to see southern Japan, it is a great way to enter the country. The airport has a subway station and it's just 5 minutes to Hakata Station, and a few minutes more to Tenjin which is the main downtown area. After flying across the globe, sitting on a train or bus for another hour to get into town can be just excruciating.
For Fukuoka, there are many open parks, shopping, seaside historical areas, and urban neon. See this site as a good guide:
http://www.thejapanfaq.com/fukpic.html It's also not far from one of Japan's very best, yet almost completely unknown sights in the country - the Nanzoin Temple, and it is completely
FREE!https://www.youtube.com/watch?v=lT4VQFmHFyMOhori, Maizuru, and Nishi Koen are all close to each other and offer some great strolls.
It also has many places not overrun with tourists. Yusentei is a delightful 18th century villa and pond with a serene atmosphere.
https://www.youtube.com/watch?v=AbsU4N99Qu4Plus Fukuoka Tower and Odo Park have some beautiful ocean sunsets.
https://www.youtube.com/watch?v=A5f-hxTFy_8You can also see a lot of previews on the best there is to see here
https://www.youtube.com/playlist?list=PL7LcPcmoSg-j4RLa6iC7ayvBAbOn8-0...But it's also a gateway to a part of a Japan that has long been ignored by many tourists (which has a lot of benefits, definitely).
Nagasaki is gem of a place to visit, and has a whole range of places you can't see elsewhere in Japan.
https://www.youtube.com/playlist?list=PL7LcPcmoSg-gbw2yXNLK92siHyNqSNx...There are some of Japan's best hot springs also, and several live volcanoes.
It also makes a great entrance to southern Honshu, which has many places that are overlooked.
Hagi is a jewel that few make it over to see. Its preserved area is like going back in time to a different era. The castle remains were also very nice.
https://www.youtube.com/watch?v=wjw577xBinIAnd Akiyoshido is one of Japan's finest natural places, a 300 million year old wonder with huge caverns and underground river running through it.
https://www.youtube.com/watch?v=wjw577xBinIOverall I'd say it benefits Europeans a lot to have such a route into Japan, and of course, it makes it easier for Japanese to go to Amsterdam and the rest of Europe.