I spent a long weekend with my colleague at Martin's place. The apartment is super cosy, fully equipped, located very near to the city center and has a private terrace with an amazing view. Next to the house is the ooster kerk church, which bells you can hear in the mornings.
Martin was very helpful and friendly. It was easy to communicate with him. Our morning flight back was delayed but it was no problem to stay 5 hours longer in the apartment.
The only negative thing was that time was too short to enjoy Amsterdam:-) Thank you, Martin, we will definitely come back!