Andrea let us check-in early, which was very much appreciated!! Very detailed instructions and communication from Andrea. All the information you needed was provided on the app (wifi, key, etc.). Space was very roomy for my boyfriend and myself. Beware you do have to climb up very steep 4 flights of stairs (no elevator), but we're young and it really only was hard when we had all our luggage (arriving and departing).
Private rooftop was a big plus, and area wasn't too far from the main area of Amsterdam. Would recommend the Foodhallen very closeby for food. No overhead lighting in the living room/kitchen; there was only a lamp. So if you want cook or hang out in the living room once the sunsets you may have trouble, but we didn't really mind.
Only trouble we really had was: If Andrea asks you to leave the key on the kitchen table, beware her door locks automatically behind you, and you need a key to unlock the door to the building, so be smart and don't get locked in the stairway like we did (luckily a man in the building unlocked the building door to let us out).