I had a great three nights staying in the backroom. Two of the nights I had a wonderful time chatting with Shawna and her husband - both interesting and very friendly people!
The location is ideal, after staying even closer to the centre of Amsterdam I appreciated this even more. Dam Sqaure is such a short walk away but at the same time you're surrounded by the more legitimate lifestyle of the inner suburb. Bars and cafés are at your doorstep (I recommend screaming beans for breakfast) and nothing is far away.
If you want to have an entirely private time you'd never know you weren't alone, the room is exceptionally spacious and private. I'll certainly be staying here next time I'm in town.