The apartment is lovely and spacious in a great location. Getting to it was a bit of a treasure hunt but was easier than it looked and good fun. The distances are much shorter than they look on the map, just make sure you head in the (far) right direction when you collect the keys.
The appartment is perfectly fine to stay in but there are a few niggles that I will point out incase any of the following are important to other guests.
1) I stayed in the apartment with my neice, so only 2 of us. I specifically wanted 2 separate bedrooms. However, when we arrived, only the pink double bed was made up and a sofa bed in the lounge/lobby. The beautiful main bed had no bedding. Apparently, if you are underoccupying the apartment you specifically need to request that both beds are made up. That aside, the pink bed was comfortable. Can't comment on the red one.
2) There are spare pillows but no extra pillowcases so we had one pillow each. Extra blankets are provided but no extra sheets.
3) There is no kettle, or toaster or microwave. It does not say in the listing that there is any of the above but I wrongly assumed at least a kettle in a fully equipped kitchen. There is no grill pan in the oven either, so forget making tea and toast in the morning. Fortunately, there are nice places to eat nearby, so forget using the kitchen and go out.
3) The water pressure is not great. Take it as part of the charm of an old appartment. It's fine and you can have a decent enough shower but washing long hair may take a lot of time.
4) The listing mentions a private balcony or terrace. There isn't a private outdoor space to sit. Didn't really bother me as I think from other reviews you can gather that there isn't. But if you are hoping for a balcony with a canal view, you will be disappointed.
Apart from the niggles, it was all good. We felt safe and were comfortable and it's in a good convenient location.