What?? Why would you do this?? I don't even like a spritzer! Lol! Ordinary water added to wine?? I'd be horrified! If it's so you don't want to drink as much either make a spritzer or just sip on a small glass!
DH and his family are Italian and wind and water is very normal. He's been drinking red wine with water since he was kid. We generally don't dilute but red wine topped up with sparkling water is nice if wanting a glass but not necessarily to consume much alcohol