Just posted a photo @ St. John's Island https://t.co/HBfBQF12YO
North Region
[{'url': 'https://t.co/HBfBQF12YO', 'expanded_url': 'https://www.instagram.com/p/CVRsNaOvt2q/?utm_medium=twitter', 'display_url': 'instagram.com/p/CVRsNaOvt2q/…', 'indices': [40, 63]}]
SEMBAWANG CENTRAL
['posted', 'photo', 'st', "john's", 'island', 'https://t.co/hbfbqf12yo']
[]
just posted photo john island
posted photo st john island
  [
    {"relatedness": False, "type": "none", "explanation": "This post does not relate to a maintenance report 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 St John Island" without any context or details that would suggest otherwise. Therefore, the answer is that the post does not relate to a maintenance report feedback to public flat house.