Has anyone visited the stema 2 studios?

I am slightly concerned about my booked holiday to Sidari on 30th August for 2 weeks as there seem to be large groups of teenagers also going around this time.

I will be going with my boyfriend and we asked for 2 weeks somewhere that is quiet but within easy reach of entertainment if you want it.

Is this true about the green sewerage into the sea????? Surely that is dangerous!

Thanks