I loved Amsterdam, and Charlie and Keeva's apartment added to the experience. Charlie was on his own during my stay. He was attentive, welcoming, responded to my inquiries quickly, and was fun company when I joined him in the living room -- but he was never intrusive and gave me my space. The steps up to the apartment were crazy steep (but that's everywhere in Amsterdam), and the twin bed was incredibly comfortable. The apartment is in a quiet residential area with a couple of cafes and supermarkets close by, and a tram stop just up the street. I would stay here again in a heartbeat.