Jay and Tess's place is amazing! Beautifully decorated, super clean and best location! It is close to everything - museums, red light district, Jordaan neighborhood and their place even gives you the feel that you are in a true neighborhood and not just a purely tourist area.
as for Tess and Jay themselves I have never had better hosts. they are truly kind hearted and go out of their way to help you out, from local restaurant recommendations, to free snacks in your own mini fridge, to even walking you from/to the bus so you don't get lost! They are just good people and I thoroughly enjoyed my stay! Whenever I'm back in Amsterdam this is the only place I'll stay!