I have been using yamaha avantiz 125 for a few years. Very reliable, no issues at all. It can fit 1 open face helmet, I use Givi cielo 30.1. Max speed is 95 km/h, fuel is some 2.5 litre per 100 km. Maintenance is oil every 2000 km and gearbox oil every 4000, the rest is by usage or by owner’s manual timing.

I think for your usage this scooter is good enough. Can find second hand at good price, I paid 4.5K in 2018.