There were many things that I liked!
Firstly, the design of the apartment is extremely stylish and appealing. Secondly, there are little things here and there that show that the hosts care about their guests: a book with detailed description of the amenities, nearby shops and restaurants; selection of snacks, tea and coffee; extra blankets; the list goes on. Thirdly, the hosts themselves are very responsive and friendly. Way to go!
What I didn’t not like, though, was the way the flat is heated: there are two ACs upstairs, but they are not able to warm the downstairs area due to air convection. And the heater downstairs does not do it’s job. It’s a half-basement flat, and it gets quite cold and dump there on rainy days. Also, the self check-in is not independent in fact, since you need to bother hosts with letting you in through the front door in case you arrive late.
Overall, a good value for money.