Hassle free, very reliable, bullet-proof implies you are unable or unwilling to do-it-yourself.
I assume this refers to e-bike technology rather than routine maintenance (i.e. lube chain, adjust brakes) and repairs (i.e. fix flat tire).
If so, simple would be better than complex or sophisticated. For example, if there are no hills to climb, a light weight, single speed bike with a 250 watt rear hub motor might be a good fit at relatively low price point.
At over 200 lb rider weight, I would consider the strength of rear wheel spokes and overall ride comfort. For example, I started riding e-bike at 245 lbs and broke several rear spokes on brand new bike.
As heavier rider, I also went with e-bike equipped with shock absorbers on front forks and seat post and a spring loaded seat. I would also consider a bike that has wider tires or can accept wider tires (smoother ride, more traction).
Another thing to consider is outgrowing an entry level bike. For example, after a couple years, I’m now an athletic 220 lbs (65 years old) and have eclipsed bike’s capabilities.
Consequently, I would consider spending more time on due diligence. Here, visiting bike shop with knowledgeable people and testing brands and models is invaluable.
After all, if this is principal transportation, you will be living with your decision and you might as well be very comfortable with it.