Kensplace is great, I stayed at his house for 8 weeks, it has everything you need to get well through life in Hawaii. Ken always writes back quickly, is very friendly and also flexible. I have always felt very safe in the area and it is a quiet place even at night. You can reach Wikiki by bus from the front door in 25 minutes.
Ken also sometimes organizes BBQ, camping or hikes for the people who stay there. This way you will get to know the people who live with you and you can probably make some friends.