Same as everywhere I'd say - bitcoin works just fine... But if you wan't to spend in daily life, you'll need one of those crypto credit cards and some few locations in major cities that may accept payments when the right person is behind the counter. 5/10 people still laugh when I mention bitcoin, 4 will tell me how somebody got rich on DogeCoin and maybe 1 will consider giving it further thought and their own research.   

 Yeah... Covid did help a little with the paper slips I guess, but as a precaution I'd still recommend visitors to prepare themself for a not so friendly german-stare when pulling out the credit card at a small coffee shop or bakery 😉