Depending on what it is you are going to be cleaning off the tiles, a high pressure sprayer will do a pretty good job with a little heavy duty cleaner poured/sprayed on. Oil/grease will be a little more difficult and you might need to pour some degreaser onto the tiles and let it soak in for a bit before cleaning.
It's nothing too serious, just to clean the balcony. I just tried something from bunnings, and it's ok. But not great. The grime between the tiles is still there. Out biggest problem is exhaust dust from the main road. 








