I'm at Sauna @ Carissa Park in Singapore https://t.co/vYjWu9sEaT
<a href="http://foursquare.com" rel="nofollow">Foursquare</a>
East Region
[{'url': 'https://t.co/vYjWu9sEaT', 'expanded_url': 'https://www.swarmapp.com/c/1HcWUOw3WBL', 'display_url': 'swarmapp.com/c/1HcWUOw3WBL', 'indices': [41, 64]}]
TAMPINES EAST
["i'm", 'sauna', 'carissa', 'park', 'singapore', 'https://t.co/vyjwu9seat']
[]
sauna carissa park
sauna carissa park singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This post does not relate to a maintenance report for a public flat house."},
    ]

It seems that the post does not mention anything related to maintenance report feedback for a public flat house in Singapore. The word "sauna" and "carissa park" do not seem to be related to any specific facility or infrastructure that would fall under the responsibility of a public housing authority. Therefore, the answer is that the post does not relate to a maintenance report feedback to public flat house.