Kai is good host, we haven't seen us at all but everything was OK because he respond in copule of minutes after sending a message. Apartment is cca 2.5 - 3 km away from city center but good connected with public transport. Floor heating was not enough for us but luckily host had an extra heating in apartment.
Parking lot is public, and think that you have to pay parking lot in hole Amsterdam doesn't matter how far from city center it is.