Zoe I have stayed at Golden Moon a couple of times, lovely small friendly hotel, I personally haven't heard anything in the past regarding overbooking?
Did you book direct with hotel?
Not sure if this us the email address you used,
info@goldenmoonhotel.com. That's on updated website, maybe you would feel better if you called them? +90 252 613 3235, hope you get it sorted Zoe,