That's really not a lot of electricity. Do you have a proper A/C unit installed, or a portable unit?Nice! We're still under 4Kwh for the house AC, although only 2 rooms and not a huge house. But bedroom is kept at 18ºC and living room at 20ºC, utter bliss.
2Kwh on my AC in the cabin, my server lives in there so keep it at 21-22ºC while I'm not in there to prevent anything from cooking.
Edit: On top of that, Octopus Agile has been 10-15p/Kwh most of the day so it's cost very little to run.