To German ears, the difference between v and w is really difficult to hear.
I speak from experience…
I speak from experience…
Anecdotally, I once spoke with Russian students (this was long ago) who insisted that there was a Russian 'v/w' sound in the word Berenburg (the name of a distilled spirit). I couldn't hear it...
But in this context, the "v" we're talking about is the English IPA /'v/ (e.g. valley /ˈvæli/) vs. IPA /w/ (e.g. wool, IPA /wʊl/) and that difference is far less noticeable.
For an English speaker, to put it differently, while the words as a whole are not pronounced exactly the same, the starting sound of German "Volk" is the same as for English "folk", while the starting sound of "Wolke" is the same as for "valley".
Edit to add: she’s German, we laugh about it.