I'm at Subway in Singapore https://t.co/gOo0Im8KlG
East Region
[{'url': 'https://t.co/gOo0Im8KlG', 'expanded_url': 'https://www.swarmapp.com/c/7bg8v6TNj2a', 'display_url': 'swarmapp.com/c/7bg8v6TNj2a', 'indices': [27, 50]}]
CHANGI AIRPORT
["i'm", 'subway', 'singapore', 'https://t.co/goo0im8klg']
[]
subway
subway singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance reports."},
    ]

It seems that the Twitter post you provided does not relate to a maintenance report feedback for a public flat house. The term "subway Singapore" does not provide any context or information that suggests otherwise. Therefore, the answer is that the post does not relate to a maintenance report feedback for a public flat house.