How late do the hotel pools stay open?

[Firepole]

  I'd like to be able to come back to the hotel and jump in the pool for a swim. Of course, this could happen very late at night and was wondering what hotels allow there guests(and TG's) to use the pool very late, or all night long? I'd like to initially stay in the Soi 7 or 8(maybe Flipper) area and then on to the RG but might change my plans for a pool. Anyone know? Thanks upfront.  

[Taxi]

Flipper on Soi 7 was was not all night but can't recall how early it closed.  I guess the trouble is they always had staff up there to man the bar etc....

[vanilla73]

pool in flipper house soi 7  closed 20:00