Is it wise or good to accept a company as a guarantor?
Well, a limited company could just disappear, leaving you without a guarantor to go after.
I see it as higher risk.
Do your research on the company first. Make sure they’re big and well financed enough to still be around in a recession or they suddenly have to pay out for a lot of defaults. Also study the terms of the guarantee carefully to make sure it lasts the whole tenancy, even if you increase the rent and that they can’t easily wriggle out of paying. Check particularly what is required of you for the guarantee to be/remain valid.