This small 1.5kw cooling/2kw Heating decent brand MHI split ac should be suitable for most Australian bedrooms, providing cooling for rooms up to 15m² and heating for rooms up to 19m²
Guys, 1.5kw is plenty of cooling capacity for a 10m² bedroom and it's the inverter unit - it can ramp up to a maximum of 2.5kw for cooling and 4.1kw for heating
VIC Click here Mitsubishi Heavy Industries Ciara Series 1.5kw $618.20 @ Fastflex
Specs:
Wifi - yes
Nominal Capacity (Range) & Power Consumption
1.5 (0.7~2.5) Cooling / 0.35 (0.20~0.85)
2.0 (0.9 ~4.1) Heating / 0.42 (0.21~1.39)
Maximum Power Consumption 1.55kw / (R32) 0.43KG
EER/COP 4.29/4.76


Good luck getting it installed. I've never been able to find a tradie who would install an AC not bought from/through them.