Due to the difference in requirements, it’s not possible to set a general price. Rule of thumb for hosting is 60€ per night per person, excluding John’s time.
Wifi (ADSL but fiber is on its way), note pads etc. (do communicate your needs in advance, better we purchase certain utensils here than you traveling with a bag full of feltpens …)
two kitchens, two fridges, washing machine, pantry basics, three bathrooms, 5 toilets, 2 friendly dogs, your own key to the house, bedding, linnens, beach towels.