We had an amazing 4-night stay at Numa | Nook in Berlin.
Check in was super easy online. On the arrival date, you just get a PIN code and room number via chat and can just walk in. No keys required at all; no waiting or other interaction required.
The room was spacious with big windows, a very nice bathroom, and lots of wardrobe space. Everything was nicely put together and exuding a calm, sophisticated look. High quality soap and shampoo are available, as well as lots of smaller complementary drinks & snacks. We even got complementary breakfast delivered to our door every morning as a nice surprise.
All interactions with the host were super smooth, friendly, and done via chat. Same for the one-click checkout.
It's somewhat expensive, but generally worth the price.
All in all, the perfect experience!