A walk along the lively Soi Sansabai at night.
Soi Sansabai is at the end of Bangla Road. If you walk up Bangla Road from the beach, you will come across Soi Sansabai as you cross Ratchutit Road.
There are many good bars, restaurants, barber shops, hotels and a lot of good massage shops (any kind of massage). Go for it next time you are in Patong.