If the room is 65 and the bottles are on the floor it could well be below down 60 there. Soring them up higher will help. If you can put them on top of the refrigerator not only will they be up into the warmer part of the room but the fridge also makes a fair amount of heat. I like to put a thermometer in with the bottles.
After around 2 weeks re-ferment (never mind posting dates) the harsh alcohol taste and smell is gone. I didn't re-secondary. Bottled with 1 cup corn sugar and was sure to get some trub in the bottling bucket. Will taste in 2 weeks.
I agree with the other posts....put the bottles in warmer place. Like near the boiler or water heater. Also check to make sure that the caps are on right.
I once tried to use some twist-off bottles and they didn't carbonate well. I think all the gas escaped out the top. I was told that I could use twist off bottles, so I tried like 4 bottles and they didn't carbonate well, but the regular bottles others did. You could have a bad batch of caps.