Ernst place is lovely. Quite literally on the 3rd canal which a great view. Not too loud at night but its directly facing a street so you might get your occasional drunks from time to time. Ernst left a bottle of wine for us which was a nice touch. His decor is great, the adjustable lighting makes the living room perfect for a weekend getaway and the bedroom itself is massive. Kitchen is completely modern and the location is so central that you're so close to everything, yet just far enough that its not too touristy.
Only thing I could think of as a drawback was the shower. Its without a door so you have to use a squeegee to wipe the excess water. Such a minor detail but it did not affect the experience whatsoever. 10/10