Stairs on the left side in the second half of mountain are slippery, narrow and partially destroyed in some places, so i strongly suggest that you take those stairs on the left side only up, not down. Whole journey (up the stairs on the left and down on the cable car on the right) took us about 4 hours. Food, drinks and restrooms can be found near all points of interest on this mountain, and along the way there are plenty of places where you can sit or even lie down to have some rest, which makes the climb comfortable.