Roy was incredibly helpful and accommodating to everything we needed during our stay. The rooms were satisfactory for the 4 nights we were there, and he provided us with a bit of food and drinks complementary. He was very welcoming and great to talk to, plus had great recommendations in the area. The location of the apartment is amazing—5 min walk to a bike rental place (highly recommend biking versus buying tram passes—much more affordable and efficient), and a 5-12 minute bike ride to most attractions in central Amsterdam. Note that the kitchen-ish area is a bit small— there is fridge space, microwave, kettle and he provides silverware and plate/bowls, but it is probably not enough space to prepare things beyond bread and cheese etc.
Roy also took us on a (e-)biking tour outside of Amsterdam through his touring company— it was an incredible afternoon that we highly recommend if you are looking for a unique view of the areas around the city. He took us to a couple local bars and landmarks and was very flexible about timing and choices of routes. He is from the area and definitely knows how to show his guests an amazing time!