We just stayed in the apartment for five days before Easter. The apartment is very good, clean and comfortable and had everything we needed.
The bedrooms were good and the bathrooms excellent and the place is finished to a high standard in terms of fixtures and fittings.
You're just a few metres from a canal and lots of places to eat and drink very close by.
For groceries, the Jumbo on Westerstraat is about a ten min walk away.
The street itself is reasonably quiet. The only noise we could hear from time to time were people queuing for the little museum next door and some noise carried if the cafe bar at the end of the street was busy. Other than that, pretty peaceful, and very little vehicular traffic as you'd expect.
The only two potential considerations for older or less mobile visitors would be (1) the generally soft lighting in the apartment, which was generally fine, but we would have had it a bit brighter; (2) the stairs down to the double bedroom suite are quite steep and narrow, but fine if you have reasonable mobility.