Overall great experience! Filippa's apartment is great - cozy and comfy - and I definitely recommend staying there if you come to Stockholm.
The location isn't in the very center of the city, but the apartment is located a 30-sec walk from the train station which will take you anywhere you want in Stockholm.
Filippa was very responsive throughout our entire communication, which I highly appreciate in a host. She also helped with tips when I asked. The WiFi worked well, the kitchen is well equipped, the shower always had hot water, and the balcony is just lovely.
The only problem was finding out that I can only check-in at 5pm, which really didn't fit my schedule on my arrival day.
Otherwise, I had a good time.