Just posted a photo @ Grandplus Building https://t.co/6zEkzlfTTK
Central Region
[{'url': 'https://t.co/6zEkzlfTTK', 'expanded_url': 'https://www.instagram.com/p/CHP0Yqknf5P/?igshid=1mtuomb2v0y1i', 'display_url': 'instagram.com/p/CHP0Yqknf5P/…', 'indices': [41, 64]}]
KAMPONG BUGIS
['posted', 'photo', 'grandplus', 'building', 'https://t.co/6zekzlfttk']
['building']
just posted photo building
posted photo grandplus building
  [
    {"relatedness": False, "type": "none", "explanation": "The 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 a maintenance report feedback for a public flat house. The post only mentions a building, which could be any building and not specifically a public flat house. Therefore, the answer is that the post does not relate to a maintenance report feedback for a public flat house.