Johan's place is in a good location, within easy reach of all the tourist spots. It's a nice and comfortable place. The only improvement that could be made would be to have some decent curtains, as they don't block the light at all, which at this time of year can be disturbing for those of us who aren't used to daylight in the middle of the night.
We still had a great time at Johan's place and I would definitely recommend it or stay there again.