We didn't get to meet Lovisa, but she gave us a lot of tips and answered all of our questions very kindly and quickly.
The apartment is perfect, there is everything you need (wifi, kitchen, towels...). Very clean and quiet (view on a lovely square, and no traffic!). And it's located less than 5 mins away from Skanstull station. Right in Södermalm, so most of the interesting things in this area are within walking distance.
We definitely recommend the apartment, and Lovisa is a great hostess!