2 nights in ria apartment:

1 night: I was alone watching tv at 2am then suddenly someone knocked the door. then I saw nothing from outside nor the walkway. Maybe someone purposely do that or ......? Dont know....

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1 night: the windows was closed tightly, also 1am. then suddenly the windows open wide. Maybe is differential pressure outside and inside? Dont know.. Cuz that time quite a lot ppl staying inside the apartment and all fall asleep..

U guess....