I'm at Downtown Core https://t.co/8UhQ8ahkQS
Singapore
[{'url': 'https://t.co/8UhQ8ahkQS', 'expanded_url': 'https://www.swarmapp.com/c/0RlJQe7Dkjd', 'display_url': 'swarmapp.com/c/0RlJQe7Dkjd', 'indices': [21, 44]}]
CLIFFORD PIER
["i'm", 'downtown', 'core', 'https://t.co/8uhq8ahkqs']
['core']
downtown core
downtown core
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

It seems that the Twitter post "downtown core" does not relate to a maintenance report feedback to public flat house. The term "downtown core" is a general term that refers to the central business district of a city, and it does not provide any specific information or context that would suggest otherwise. Therefore, the answer is "False" for the question "Does the post relate to a maintenance report feedback to public flat house?"