We stayed for a week with our 4-year old and 2-year old daughters. Elisabeth was very responsive and even helped me carry all my stuff up to the apartment when I arrived first with our 2-year old! There were plenty of toys for the kids to play with and dressing up clothes so the kids loved being there. Plus a cot bed, high chair and bath for baby which was very handy. The flat feels very homely and is in a great location, ten minute walk to Medborgarplatsen and then a couple of stops to the city centre. In the area itself there are lots of cafes, restaurants and cute playgrounds worth visiting. It is also very close to Chokladfabriken which I had heard of before since I'm from Stockholm - we took the kids there for ice cream which was a big hit!
Highly recommend staying in this flat - beautifully done up, great location, responsive host and especially ideal for kids.