Me and my girlfriend stayed at Lotte's flat for a week in June, on our trip to Amsterdam.

Lotte is a great host and she has an awesome flat. The house is everything but more as advertised. The terrace is quiet and peaceful, an ideal place to relax after a long days roaming around. Even though she was also in a trip abroad, she was very kind to check on us and see how we settled in.
The flat is about half an hour walk to the city center and public transportation is really easy to reach from the flat (though we prefer walking to explore the city). It was easy to find a parking space in front of the house on the street for the rental car we hired for 3 days.

I would definitely recommend Lotte's flat for those who wants to stay in 'Dam and be relaxed after a long days' walk in the city.