My partner and I had the most wonderful time staying in Nils home.
Nils home is quintessentially Swedish which was nice. He lives very close to a forest/park with lakes that you are able to get to. One lake has a sauna by it . You can swim the Hellasgarden lake too - even during winter months if that takes your fancy.
His home is also just seven direct stops to Gamla Stan (metro) which is the old part of city. We found everything is really in walking distance from there and didn't need to use the Metro/trams much.
Nils was a wonderful host and our room was very homely. I would recommend Nils place to all friends and family should they wish to visit Stockholm.