Response from Giacomo:
thank you for your precise and meticulous reviews.
About the the bathroom, i'm sorry and surprised but is the first time i hear something about the smell ( noone ever told me something about that )
About the burners i checked them several time and they seems to work good...so i will check it again to be sure, but it seems to be a real mistery :-)
Finally, thank you for other considerations that i will mind for the next time.
Ciao and thank you very much for the other appreciations :-)