Hi,
Can you add a shelf on the wall near an electrical point and place the microwave there? Just thinking outside the box. It's difficult to suggest without seeing the layout of your space.
Yes, I think if you are renting an a flat or an apartment, guests would expect to see a microwave and perhaps these days is considered an essential item to have in the kitchen. Both short and long term guests might find it very useful to reheat their food if ordering a takeaway or buy something ready that needs to be reheated.
As someone else also suggested, there are now a wide range of microwave/oven available and affordable to buy.
Not sure if Airbnb consider it as an essential but there is certainly an expectation from guests to have it.
I only rent rooms to guests in my home and although they have no access to the kitchen, I have been asked several times if they can use the microwave to heat up milk or a drink for their children. So my answer has always been yes of course.
So you might have a young family that expect to see a microwave in the kitchen.
The very best of luck for your new flat.
