Happy National Day SG! 🇸🇬 https://t.co/qb893i4GYz
Sands SkyPark
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BAYFRONT SUBZONE
['happy', 'national', 'day', 'sg', '🇸', '🇬', 'https://t.co/qb893i4gyz']
['happy', 'happy', 'happy', 'happy']
happy national
happy national day sg
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the Twitter post does not relate to a maintenance report feedback to public flat house. The post simply states "happy national day sg" and does not mention any issues or concerns related to public housing. Therefore, the answer is that the post does not relate to a maintenance report feedback to public flat house.