Thank you Rusne for your review, I appreciate your kindness and your information.
I am sorry that the internet was slow, but it is the best I can do as there is no network for internet, phone line orTV cable in Saint Pierre de Curtille.
I had to install it all privately to have reception for TV, internet and phone. Saint Pierre de Curtille is considered the country and has no priority for network, it'll come eventually.
Since the guests arrived at night, communication was not available, I would have told them, that by night it is nice and cold outside, and it is necessary to make the air flow throw the appartement, by opening one window at each end of the appartment even with the rolling shutters close. I am sorry for the missed communication.