Nis and Dorothy's place is nothing but amazing!
My girlfriend and I stayed in their place for 2 days between Christmas and NYE and thoroughly enjoyed our time. It's perfectly located close to the lakes and with almost all major tourist attractions within walking (or biking) distance. They live in a very cute neighbourhood with plenty of options for dining out and going for a few drinks.
The apartment is spacious, very clean and hip - we even got to use their barista coffee machine in the mornings to enjoy our homemade coffee on the balcony :)
In all honestly I think they undercharged for their apartment and I highly recommend anyone to stay with Nis and Dorothy!