I stayed here on a solo work trip. The apartment is a small cosy one, but has every facility you need. The location is very close to checkpoint Charlie, the Jewish museum and the Wall.
The amenities are super, and you have everything you need to have a comfortable stay. Would be nice if the hosts put a how to manual on using the stove and heater maybe.
There is a very nice looking cafe downstairs, where I didn't get an opportunity to eat due to its short hours, but I would think it's great. The manager there was super kind when I arrived early and helped me with my luggage.
Overall, I would definitely choose again!