Stayed for two nights. The first night in a regular parking space, then one in a campervan spot. A beautiful spot on the water. Relaxed atmosphere, but busy. No amenities except for the dirty water well and trash cans. It's within easy cycling distance of Groningen city center. We didn't experience any road noise; where else in the Netherlands is it truly quiet, and you can park for free? If I know, I won't tell you ;-). I highly recommend this place.

we are here for two nights with the camper and with electricity for 20 euros. two people and dog. very friendly owner who likes to give tips. showering costs 50 cents, at least if you want a hot shower. 😉