Well, I have never had a baby in Japan, but I've heard lots about having babies in Japan as I've had babies with a Japanese person. I've also done a lot of research on the subject since I am a doula(labor assistant) and am interested in how they approach childbirth.
There are a few different places to have a baby, from what I understand. The most popular, I believe, are the freestanding birth centers. It's somewhat like a hospital, but also somewhat like a hotel. Women can have their babies there and then stay up to 10 days after the baby is born and have everyone do everything for them. Of course, they also have the regular hospitals and midwife clinics, where I'm not sure if the new mother stays that long at those places.
The Japanese are not liberal with pain medication during labor and delivery. Epidurals and narcotics are not usually used and c-sections are extremely rare, which I think are very good points. The few negative points I've come across are that Japanese doctors are extremely strict when it comes to weight. I have heard where they think 6-8kg is plenty to gain during pregnancy and also, they are really into doing episiotomies. Every woman that I know that has had a baby in Japan has had an episiotomy, except for the few that have had their babies at midwife clinics.
I do have this site that is owned by Nora Kohri. She is a member of my husband's mailing list and has written a few books about birth in Japan and birth overseas for Japanese people. My husband bought her book for Japanese pregnant in the U.S. and found it really helpful when we had our first baby.
frame
I might be able to find more sites, too.