1.5-room apartment - Kitchen renovation

The problem is, it is not a normal corner (90 degrees). You can also see this in the photo, no idea how I should describe it.

Place the base cabinet at a distance from the wall. Either at full depth with a correspondingly deeper countertop or take a base cabinet with reduced depth. With a classic corner carousel, there is usually an offset anyway, which might be suitable for the corner.

A countertop with custom cutouts is available both at Ikea or faster at any hardware store.

Wrong!
If I were you, I would hope that the tiles fall off the wall or, even better, take matters into your own hands. Then 4 sqm of leftover tiles from the hardware store for €5 per sqm can go back on the wall, and it really looks good. This measure is immediately 100% tax-deductible as a landlord.

But you mean only re-tiling the damaged spots, right?
Or would you tile the entire kitchen anew instead of leaving it as it is or painting over it?
Because it certainly looks strange if there are two different tiles on the kitchen wall. For example, if you see the projection directly to the right of the entrance and it gets damaged, you would have two different tiling jobs there.

I can certainly manage a few things myself, but whether I should tackle tiling as a layman...

Place the base cabinet with some distance from the wall. Either at full depth with a correspondingly deeper countertop or use a base cabinet with reduced depth. With a classic corner carousel, there is usually an offset anyway that can work for the corner.

A precisely cut countertop with notches is available both at IKEA or faster at any hardware store.

I need to take a closer look at the kitchen again to see how it’s arranged at the corner there. However, I was under the impression that you can’t manage that with a ready-made kitchen.
But I will also check IKEA again to see what the corner cabinet is like there. However, I don’t know if they have a shortened one, because you can’t really fit a regular 90-degree corner cabinet there.

I will get 1-2 quotes on what the replacement or wrapping of the kitchen cabinets would cost. Advantage: you get a tailored kitchen. Disadvantage: you can’t paint the tiles.

You mean then only retiling the damaged spots, right? Or would you retile the entire kitchen instead of leaving it as is or painting it?

Completely new wall tiles.

Leave the kitchen in and give the tenant the option to replace it themselves. If they then ask what and whether they can do something, you can still negotiate: You lay vinyl and provide a new sink and stove, and they buy and install the kitchen furniture, that would be the deal :)

I would also leave it in, it's still in great condition. Just clean everything properly and that's it.

Leave the kitchen in and give the tenant the option to replace it themselves. If they then ask what and if they can do anything, you can still negotiate: you install vinyl flooring and provide a new sink and stove, and they buy and install the kitchen furniture, that would be the deal :)

I would also leave it in, it’s still in great condition. Just clean everything properly and that’s it..

Basically, the condition is still okay. You have to see everything in relation to the rent. That would definitely be the reasonable option. So no new countertop at all? Stove and sink are clear, the tenant can organize a new fridge.