I stayed in the Birger's house for a bit more then a week. I was really lucky to chose this house, because everything you read in description exactly as it is. And really good heating - for me it's very important point as I'm cold-sensitive person, and autumn nights in Belgium pretty cold :)
Birger himself is a very nice person, friendly and so welcoming! He is busy enough with work and family but still we had some time for nice conversations.
I recommend you to stay in this place and you will never regret :)
Enjoy your staying in Gent!