My sweetheart @ Singapore https://t.co/3H83p0mTZ1
Central Region
[{'url': 'https://t.co/3H83p0mTZ1', 'expanded_url': 'https://www.instagram.com/p/CQiUV7fjC0g/?utm_medium=twitter', 'display_url': 'instagram.com/p/CQiUV7fjC0g/…', 'indices': [26, 49]}]
MARINA CENTRE
['sweetheart', 'singapore', 'https://t.co/3h83p0mtz1']
['sweetheart', 'sweetheart', 'sweetheart', 'sweetheart', 'sweetheart']
sweetheart
sweetheart singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance reports."},
    ]

It seems that the Twitter post "sweetheart singapore" does not relate to a maintenance report feedback to a public flat house. It is not clear what the post is referring to, and it does not contain any information that would indicate it is related to public housing or maintenance reports. Therefore, the answer is that the post does not relate to this category.