Saskia's apartment was very conveniently located for our needs - we ended up walking everywhere (even from Central Station, which was about a 35-minute walk). We stayed in the bedroom downstairs, and since our daughter didn't want to sleep on the other bed in the room with us, she made herself comfy on the pull-out couch in the living room. There are several small sets of stairs in this cool apartment, but it's very manageable. The house was so comfortable, and I'm glad we didn't have to cram into a hotel room.
We really enjoyed walking to Candela Koffie & Chocola for pancakes. We were not fans of Het Hmm (had we had any of the other vegetables we saw them serving, it probably would've been fine, but they gave us creamed spinach and onions as our sides, and we tried, but only ate the meat and potatoes).
Mark was responsive and tried to answer our questions and check in on us. Accommodation prices in Amsterdam are high, but we are happy with where we stayed.