Suan Phlu is the worse prison in Thailand-- and part of the problem is that foreign prisoners that have finished their sentence are sent there waiting for their embassy to OK a flight to return home. Some Embassy's (UK stands Out) seem to take an age shuffling papers around even after relations back home have forwarded their C Card to pay for it.
My Last visit was in 2018-Women Children and men were thrown together in one area-- the stench was overwhelming, & woe be it if you happen to be there when there is an immigration raid-- the numbers can double overnight. Sexual assaults on women & children were on a daily occurrence. After pressure from western countries--In 2020 Thailand said it would not Jail children or women--together with the men.