Response from Kay & Julian:
As always before any guest arrives, we had our place professionally cleaned. This is the first time that weren't able to verify and prep our home in person, however, our friend did oversee the cleaning and took photos of before and after. It seemed very clean and we've never had complaints in the past. We understand that people have different standards of cleanliness, but we generally keep our home pretty clean and tidy.
The cleaners did miss cleaning out the fridge but since then, we make it a point to ensure that the refrigerator is cleaned out.
Joscha had asked for a discount before booking which we granted at a loss to ourselves, because we had to take him in last minute after our previous long term guest had to leave unexpectedly. Since we assumed the additional cost of cleaning and did everything we could to meet his demands, we felt that it didn't require a further discount.