I stayed in Stockholm for 4 nights.
I love the location of the apartment. It's close to the city center, but quiet and just on the outskirts. It is walking distance to central station. For me it takes 8-10 to get there.
Isabella is a great host. She responds quickly. She actually did me a huge favor by buying me a ticket to an event, and I paid her back. I had trouble using my American cards for the purchase on the Swedish website.
The apartment was fine. The bed was very comfortable, and she keeps a lot of pillows which I loved too.
The apartment can comfortably fit two people. I was staying by myself so I didn't need much space.
The thing I didn't like were small things in the bathroom. It was clean, but things like the flusher for the toilet felt really loose like I was going to break it when I touched it. The shower curtain was thin I felt like I might rip it and ineffective...water got all over the place.
Overall I liked the place and would recommend it if you want to walk around Stockholm, and need to be close to the city center. Just minor improvements can be made.