I am living in Singapore and my son lives in Phuket Thailand - we have been through all this trouble before. At the moment there are no direct flights from Singapore to Phuket, the only option is to books a Singapore Airlines flight to Bangkok and do your 14 days quarantine there. Obviously the hotel in Phuket told you rubbish !!! We can’t wait until direct flights will be possible again but at the moment absolut zero flights available. My son had to do 2 weeks quarantine in Bangkok and after that catch a plane to Phuket. Sorry for the bad news 🥲