My wife and I loved our stay on the Cornelia. It was very clean and cozy, and made for some great sleeping when the boat gently rocked and the wind blew. The quarters are simple, clean, and all you need. You also get the wheelhouse, where you can kick back and chill and watch boats glide in and out of the harbor area. I was initially concerned about head-room since i am 6' 2", but it wasnt a problem and I could stand straight up in both the wheelhouse and quarters.
Els was a great host and of ever we find ourselves in Amsterdam again, the Cornelia will be out go-to.