It was really great staying with Len. He is there when you need him but never in the way. Our stay was completely private with secure knowledge that help is a message or call away. We loved the apartment, slept like logs in the very comfortable bed. The place is clean, warm and as the title says, cozy. The location is also extremely convenient, close to trams, busses eating places, shops, etc. I highly recommend this location for your stay in Amsterdam.