Keep the heat out: the best way is to have all windows open during the night (all are equipped with mosquito nets) and close everything during the day,
Mosquitos: there are quite some, especially in the evening. If you are carefull, however, they won't get in. Indoors you can also use the protective devices. For outdoors protection we're either using heaters, but with special outdoor fillers, or other outdoor repellents.
The pool: the best way to preserve a clean water is to cover it when not in use for a longer perios (definitely over night). Run the pump whenever you like. We mostly swich it off over night. The water is carefully treated with O2 and PH- (no chlorine).
Cooking: when the weather is hot, it is best to use the outside cooker as often as possible to not rise the temperature indoors. Besides, the grill plate is perfect for barbecue!
Internet: WiFi is available at about 20/20 Mb/s.
Switch off all lights and the water heater,
Check if the water faucets are well closed,
Close the gas valve on the gas cylinders (inside and outside),
Leave the window shutters open, but close the windows,
Close the shutter at the rear door and close the door,
Close and lock the front doors and close and lock the front door shutters.