I'm at 18'grill in Hougang, Singapore https://t.co/reGcSwdnSL
<a href="http://foursquare.com" rel="nofollow">Foursquare</a>
North-East Region
[{'url': 'https://t.co/reGcSwdnSL', 'expanded_url': 'https://www.swarmapp.com/c/eNmorrOrsCa', 'display_url': 'swarmapp.com/c/eNmorrOrsCa', 'indices': [38, 61]}]
TAI SENG
["i'm", '18', 'grill', 'hougang', 'singapore', 'https://t.co/regcswdnsl']
[]
grill
18 grill hougang singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This post does not relate to a maintenance report feedback for a public flat in Singapore."},
    ]

It seems that the post you provided does not mention any specific issue or feedback related to a maintenance report for a public flat in Singapore. The term "18 grill hougang singapore" does not provide any context or information 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 (e.g., a broken facility, an inconvenience, block number or street, requst fixing, etc.)?"