Keep calm and carry on. @ Singapore, Singapore https://t.co/WwXkIqPRDv
Central Region
[{'url': 'https://t.co/WwXkIqPRDv', 'expanded_url': 'https://www.instagram.com/p/CRTdRP0HBMe/?utm_medium=twitter', 'display_url': 'instagram.com/p/CRTdRP0HBMe/…', 'indices': [47, 70]}]
MARINA CENTRE
['keep', 'calm', 'carry', 'singapore', 'singapore', 'https://t.co/wwxkiqprdv']
['calm']
keep calm carry
keep calm carry singapore singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This post does not relate to a maintenance report feedback for a public flat house."},
    ]

It seems that the post does not contain any information related to maintenance report feedback for a public flat house. The phrase "keep calm carry singapore singapore" is not specific to any particular topic or issue, and does not provide any context that would suggest otherwise. Therefore, the answer is that the post does not relate to a maintenance report feedback for a public flat house.