Katia's apartment is exactly as advertised, it's lovely and in a perfect location to enjoy and explore Stockholm. We stayed there for 3 nights (with our 2 kids) and had a great time.
Katia kept in contact in the lead up to our trip and gave us a brilliant list of places to eat and visit, including good suggestions for the kids.
Whilst we were in Stockholm we had a few questions and Katia and Sylvia were on hand to help.
Overall, staying at Katia's made our trip to Stockholm much easier and enjoyable.