Marc is a fantastic host.
He was very accommodating to our needs and a helpful guide with tips and tricks for getting around the city and seeing the local recommendations.
His house boat is in the NDSM district that has good ferry links to the centre but is also in a up and coming arts and culture district of its own with plenty to do and see but with a more laid back atmosphere than the centre.
10/10 experience. You wont regret it.