Firstly the host can not do enough for you, but are in absolutely no way overbearing. They arranged our transfer from the airport (roughly £15, worth it!) and were there to greet us the second we got out of the taxi.
Batrek spent 15 minutes with us asking what we planned to do, and suggested restaurants, museums and coffee shops. They also made us aware that they could book excursions for us, but in no way did it feel salesy - it was genuinely wanting to be useful.
The apartment itself was gorgeous, spacious and well appointed. They're both architects and you can tell - honestly fell completely in love with the room and it enhanced our stay no end.
The only suggestions I would make would be to include some sort of electric grill and a HDMI cable for the TV but honestly, I wouldn't bother even looking elsewhere if I was going back to Krakow.
Thanks for a great stay in a great little city!