Nina's place is amazing. Very tastefully decorated (as in the pictures) and spotlessly clean. Nina is a warm and welcoming host. We arrived quite late on a Friday night due to a train delay, this was not a problem for her at all. Checkout time wasn't strict and we could leave our bags in the apartment to pick them up later.
Great location, just a short stroll to the hustle and bustle of the center. We did everything by foot the whole weekend.
I would totally recommend this place!