A key criteria that everybody should look for is the system of the aircon: It will turn off the aircon after 8 hours. You then need to press a reset switch and go through all the rooms to turn it on again. So far, so good. The problem is: You can only reset the aircon, after 8 hours are over. Not earlier. That means: If you come home from a trip at 6 pm in the afternoon and want to cool down the house, you then need to stay up until 2 am at night to reset the aircon again. Otherwise, the aircon will turn off at 2 am in the night and you wake up at 4 am as it gets too hot.
I have never seen such a rigid system anywhere else and at least for me it was very bothering to either spend a night at a hot house or adhere to a special schedule on pressing the switch early enough in the afternoon so that you can press it again in the evening. Makes the aircon not usable as you would expect an aircon to work.