Just posted a photo @ Saint John's Island https://t.co/XnXPljRK5H
Central Region
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['posted', 'photo', 'saint', "john's", 'island', 'https://t.co/xnxpljrk5h']
['saint', 'saint', 'saint', 'saint', 'saint']
just posted photo saint john island
posted photo saint john island
  [
    {"relatedness": False, "type": "none", "explanation": "The post does not relate to a maintenance report feedback for a public flat house."},
    ]

It seems that the post does not mention anything related to maintenance report feedback for a public flat house. The post only mentions "posted photo saint john island" without any context or details that suggest otherwise. Therefore, the answer is that the post does not relate to a maintenance report feedback for a public flat house.