This place is pretty much as described. It's located close enough to bars and restaurants that it is convenient, without being so close that you can hear everybody. The walk to the train station or the red light district was easy as was picking up the amazing public transportation that Amsterdam has to get to the museum district. It can feel a little sketchy if you arrive at night, as I did. But the next morning, I realized that I had little to be worried about.
With respect to finding the apartment, my cab driver from the train station had a hard time getting to the street it was on, but Ubers were able to find it just fine.
The apartment itself is simple but clean and exactly as advertised. The one thing to note is it is inside another apartment. It was sort of like a hotel room within a larger apartment, but I didn't need to interact with anyone else or walk through anyone else's personal space to get in and out. Not exactly what I was expecting, but totally fine. Also, as other people have remarked, bring your own soap and face cloths if you're into that. Toilet paper and large towels were provided.
Everyone involved with check in were easy to get in contact with. Someone will have to meet you to let you in, but the person who met me was there exactly when I said I would get there.
The cable didn't work, but the internet was great so the smart tv capabilities worked just fine. However, you shouldn't stay in the apartment very much. It's easy to explore from this location so get out and explore.