Charles' place is VERY welcoming. This is an arty apartment, warm and nicely decorated.
It is located near tram stations. It takes less than 15 min to reach anne Franck house (beware of booking your tickets in advance if you don't want to wait over 1 hr and a half!) and less than 30 min to centraal station.
Also Charles makes it really convenient for travellers. For example there are 2 transport cards that you can reload for your stay, which makes fares much cheaper.
Last, we appreciated Netflix and Borus the cat was kind and friendly.
We had an excellent stay there and warmly recommend the place!