Since you have made 501 successful edits I trust you have already tried to fix the issue yourself.
Please let us know what feedback you got on your edits.
I noticed that the listing is not claimed. You could suggest that the owner claim the place and fix the issues herself.
Alternatively such data issues are better dealt with in the Maps support forum. Select the Community tab at the top and post the info including documents/proff.
Asking other local guides to edit information without personal knowledge is not a good solution. Actually it is counter to the guidelines.
Asking for the support of others Bocal Guide is not a good idea, @Dago-GoodC , because we can contribute only if we have a personal knowledge of the place.
Show to the business how they can “claim their business in Google maps” through Google My Business. in this way they will have more control of the business listing, fixing the wrong category by themselves
Escalate the issue to the Google Maps Help Community . They are the most appropriate place when we are not able to fix a visible issue