First of all, it is a perfect location for visitors, the house is at the center of A'dam, so it is max.10 min. away by walk from every place you want to go. No need for taxi, so you can spend that money for better things.
Karin and her husband are great hosts, I really enjoyed to chat with them.
About the room, it is a private room, but it includes a bathroom, bed and a sofa, and also the entrance is partly separated from the rest of the house, so I can say it is a private house.. :) I stayed there 5 days, and except the weather (dark and cold), everything went perfect. I highly recommend this place for single persons or couples.