Our stay at Jan's was very nice, the room we had was enough for the three of us and the bathroom was big and clean.
Jan was a very attentive host, asking us if we wanted tea or coffee and giving us advice on where we should go while we were in Amsterdam.
The loft is in a very nice area, right next to a busy shopping street, 15 min walking from the center and central station (which was perfect for us) !
We would go back there without hesitation !