It is a conveniently located flat with a couple bed and a foldable sofa which is suitable for (in total) three persons. It is ideal for 2-3 nights to visit the city. However, I would not recommend the flat for a longer stay. It is definitely smaller in real-life than the fotos might suggest. The bathroom is so cramped that simply just turning around is a challenge. We were also greeted by an unpleasant smell when entering the flat. The air in general was very humid and heavy. Attempts to get some air circulation by opening the windows failed. So maybe a ventilator would be beneficial. Besides, the flat also requires a decent clean-up.
Given these facts I don’t feel that the price-performance ratio of this flat was appropriate. I have definitely spent less money in more comfortable and newer apartments with comparable locations.