We stayed in the apartment in early september and we absolutely loved the roof terrace. It was so nice being able to hop into the water after being out in the city when it was hot or having some food out there in the evening. It's a lovely place. The whole apartment looks really good, we liked the interior design a lot and the appliances are of good quality as well. The air conditionin was very welcome and worked quickly.
Communication was swift and nice, we locked ourselves out at one point and got help quickly. The location is great for exploring the city, right in the center.
One thing we didn't like was the bed. It's small even though there would be enough space for a big one and it's sooooo soft. I don't understand why one put such a soft matress in a hotel/airbnb rather than a medium one.
Our biggest gripe with the apartment however was the smell. The entire house smelled awful, like rotten eggs. Maybe a plumbing issue? Sometimes the apartment smelled okay but sometimes it was bad - especially since when it's very hot you can't just open the windows all day. I had to wash all clothes at home because they smelled of rotten eggs.
All in all: A lovely apartment in a great location with an amazing roof terrace - but with a smell problem.