Back here with Lester!!!!!! (at @FitnessFirstSg in Singapore) https://t.co/tsmghyzXFB
East Region
[{'url': 'https://t.co/tsmghyzXFB', 'expanded_url': 'https://www.swarmapp.com/c/ad9TO8hzInv', 'display_url': 'swarmapp.com/c/ad9TO8hzInv', 'indices': [62, 85]}]
TAMPINES EAST
['back', 'lester', '@fitnessfirstsg', 'singapore', 'https://t.co/tsmghyzxfb']
[]
back here with lester @fitnessfirstsg
back lester singapore
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance report feedback."},
    ]

It seems that the tweet "back lester singapore" does not relate to a maintenance report feedback to public flat house. It is not clear what this tweet refers to, and it does not contain any information that would indicate it is about maintenance or public housing. Therefore, the answer is that the post does not relate to a maintenance report feedback to public flat house.