Positive is that the connection of this light with the app is way better than all other products I own from nanoleaf, which actually makes it controllable through the app.
The light looks nice from a distance and the brightness is ok.
Negative to me is the build quality, it looks and feels very cheap.

I received a broken light out of the box and applied for a replacement. Since there was no stock this took several months (which was not a big problem).
Since it took so long I opted to (also) buy the Philips Hue Go table light, which admittedly comes at a higher price point (160 euro's vs 110 euro's for the Cono), but when I compare the build quality (steel vs cheap plastic), battery life (easily a full evening on the Go, vs 2, maybe 3 hours on the Cono), brightness (although the Go produces indirect light it's way brighter than the Cono) and finally app control (Hue simply always works, Nanoleaf unfortunately has issues with their app).

I still gave it 3 stars because I do like the Cono and it's design, it's just ridiculously overpriced.
For the quality you get a price point of 30, maybe 40 euro's seems fair, at the current price of over 100 euro's I simply wouldn't recommend it (there are better options out there).

with 95% of my home lightning/appliances etc being integrated with my "smart home" solution, I bought these in view of integrating them in my existing ecosystem (mostly based on Amazon Eero/Alexa/Threads). I'm sorry to report that this is a virtually impossible feat (even though both Threads and Alexa support are advertised as available). Neither the Alexa-direct integration or the threads integration via Eero are working, despite endless attempts, options and reading all available support information. Based on what I see on forums, I'm no alone in this situation, so I would at least HOPE that a future firmware update might fix some (if not all) of these issues. As of now, the 2 essentials lamps I purchased will sit in a box collecting dust.

Great, does everything expected and more.
…. But small

Quality is surprisingly on the cheaper end of the spectrum.

Very useful, works pretty good