I strongly suggest this place for single travelers. The location is great - either by tram or by walking the city center is near-by. Supermarket is around the corner.
The apartment actually looks better than the pictures. The bed was good. Nothing luxurious but everything is at the rght place. Wifi is reliable. Spacious enough.
The stairs are steep, but hey, this is the Netherlands, every house has such stairs, people live happily with them. Just be careful.
As the windows don't get sunshine the temperature could be cooler (which during the sumer is ok).
As every house, there could be strange noises from neiboughrs, but not too often and only during non sleeping time. Not problem at all.
Erik is great host and i felt safe.
Expect good service is good for the money.