Picnic under the sun 🥪🍇🍹☀️ https://t.co/fcYh4hLdmC
Marina Barrage
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MARINA SOUTH
['picnic', 'sun', '🥪', '🍇', '🍹', '☀', '️', 'https://t.co/fcyh4hldmc']
['picnic', 'sun', 'picnic', 'sun', 'picnic', 'sun', 'picnic', 'sun', 'picnic', 'sun']
picnic under
picnic sun
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the post does not relate to a maintenance report feedback to public flat house. The word "picnic" does not suggest any issues with facilities or infrastructure, and the word "sun" does not provide any context that would indicate a maintenance-related issue. Therefore, the answer is that the post does not relate to a maintenance report feedback to public flat house.