I would say "Kati's Ecke" (urks) should look modern (and fails at that, looks like cargo cult to me) or is an unintentional error of the owner because they don't know better (maybe obligatory English lessons in school compromised the actual rules of German). I am sure it doesn't look exotic to most Germans. We actually use the apostrophe in cases where adding the possessive s is problematic. E.g. "Felix' Ecke"
There is a very ugly mix of German and English we call Denglish in German.
And there are many "English sounding" things that are not English or also a horrible mix up for marketing purposes.
E.g. Handy for smartphone. It doesn't look exotic, but English which is usually considered to be something modern.
And then there is a similar concept as the Idiotenapostroph which is the Deppenleerzeichen which is a space between combined words that are usually and famously not separated by space in correct German.
All those things are usually used in amateurish marketing and look just like that to the average German grammar enthusiast.
On the other hand especially in many professional fields English conquers the professional slang with gusto of the participants. A very hilarious take on such Denglish for software developers: https://m.youtube.com/watch?v=c2V4bOL1jgM