I have been to S.P. about 15 times and always take a flash light or two, the hydro goes out regularly, and I also take a clothes line and pegs, get them at a dollar store, you can hang in the room or balcony, great for wet suits, towels or to rinse out stuff, it will dry overnight, (room fan or air) ziplock bags are always good, I use them down there for everything, enjoy your trip.