I've stayed in Patrick & Annemarie's apartment with a friend for 3 days in May. Patrick welcomed us at the time we decided and was very nice and helpful with all the information about the apartment and the city. The apartment is amazing, on the top floor (so be prepared for the stairs), very calm even if on a main street, with two air conditioners in case it gets too hot (one in the bedroom and one in the kitchen) clean and with every comfort you need, plus a wonderful roof terrace overlooking Amsterdam! We arranged the check-out time with Patrick a bit later than the normal because we had our flight in the evening and we really appreciated that. We also met Annemarie on the day we left and she was as lovely as ever. The location is perfect, 15mins walk to Dom Platz in a very nice neighborhood. Overall a great stay and I'll recommend this apartment to everyone I know if the destination is Amsterdam!