I'll try play around with water level a bit, and try two coals. The water I've been using is room temperature...
I'd say close to flavourless... there might be minute traces of flavour... but just a somewhat bitter, almost sugary taste, nothing resembling what the flavour should be. No fruity/spicy/whatever else it might be taste.
I've only had the hookah for a few days now, and the natural coals are completely new to me. So having to get used to the new things should be expected. But any acceleration you can provide in this regard will be much appreciated.
I'll let you all know what my findings are after trying the above mentioned.