Dariusz Jemielniak (.
Google
A delightful, nicely decorated fine dining restaurant.
It is pricey, but generally worth it. On its way to a full star, it serves old Polish recipes with quite a lot of modern twists.
The tastes are surprising and amazing. My only two gripes are: too concentrated soups (one would be enough, but two makes it repetitive and a bit tortuous to the buds), and serving French water (which is absurd, as there are plenty of really good bottled waters in Poland, and also since it is a carbon footprint seppuku).