We stayed in the Terrace Apartment and the first thing to know is that to reach any of the bedrooms or the bathroom it is a very steep stairway with narrow stairs. Our group got used to it and managed fine, and the host took our bags up for us when we arrived, but we were initially quite surprised by the steepness. Otherwise the apartment is in a convenient location, walkable to the train station, the old part of town and all the tram lines. Although just a couple minutes from the Red Light District, it is extremely quiet and we slept great. Furnishings in the living/dining room are adequate, but more lamps are needed. The dishwasher and clothes washer worked fine. The bedroom furnishings are minimalist and could have been dusted better. The beds were comfortable. The bathroom was also nicely furnished, with plenty of towels and roomy shower but be sure to bring your own soap as none is provided. The host was welcoming and helpful. Having our own kitchen was great for breakfast and snacks and a grocery was a short walk away. Nothing deluxe here, but a good value and we would stay again.

When booking at the Old Harbour Apertments, be awere that the front windows do not open. While i was renting the apartment the room was extremelly hot. Since the windows do not open we don't have a chance to let fresh air into the room. While these are nice apartments, be aware of this problem.

Family had the Roof Patio apartment. It is the top 3 floors (4th- 6th) of the building: Kitchen / living room area (also served as another bedroom for us) first, then up an amazingly narrow winding staircase to the first bedroom, bathroom, and roof patio. Up another narrow stairway to the A-frame second bedroom. Our first time in Amsterdam, so we weren't prepared for the apparently typical Dutch staircases. They are - no exaggeration - treacherous!
The good: Location. It is a 10-minute walk from Centraal Station and the Red Light district, but it was still far enough away that it was quiet at night. We walked everywhere from there.
The owner: He seemed truly apologetic for the construction noise (see below) and gave us a very small refund because of it, and he helped with the luggage up those stairs.
The bad:
there is SERIOUS construction going on in the basement of the house. The first jet-lagged morning, we were greeted with what sounded like jackhammers in the basement at 10 AM. After I complained, the owner got them to hold-off with the power tools until 11 AM, which we appreciated, but it tainted the rest of our stay.
The heat: they were inthe middle of a heat wave, with temps in the humid 90's, and there was no air-conditioning, just one lonely table fan. I understand that the temps were very unusual, but for what we were paying (200 E per night), there should be a couple more fans available, at least.
Those stairs: I'm serious, we were half-crawling up them.
Based on the previous glowing reviews, maybe our timing was off. I understand that Amsterdam hotel rooms are tiny and expensive in general, and we had plenty of room, a kitchen, dishwasher, washing machine, and a patio. The place is quaint, roomy for a family, has a good location. and is probably fine in normal weather, which is why I give it a tentative recommendation. All I can say is, make sure of the status of the contruction project before you book.

My husband, brother in law, and I stayed in the Roof Top Terrace Apartment July 3 - 10. The apartment is very spacious, clean, quiet and well equipped with everything you could possibly need. The location is superb. Close walking distance to Central Station and many other hot spots. The host was very gracious with helping us carry up our luggage up the steep staricases and making sure we had everything we needed. We will definately be returning to this gem of a location!