Is this e-bike good for daily commuting?

Yes, for short to moderate flat commutes. The 27.5-inch wheels and aluminum frame suit paved roads, but the modest motor and battery make long or very hilly routes a stretch.

How does it compare with a 20-inch folding e-bike?

It rolls more smoothly and feels more stable at speed thanks to the larger wheels. A folding 20-inch bike is easier to store and carry, so pick this one if storage space is not a problem.

What size rider does it fit?

It is an adult unisex frame, so it fits most riders roughly 5'4" to 6'2". Check the standover height before buying if you are near either end of that range.

Does it have a throttle or only pedal assist?

It uses pedal assist, so the motor helps only while you pedal. That keeps it legal on most bike paths and gives a more natural ride than a throttle-only bike.

How much maintenance does it need?

Less than a car and about the same as a regular bike. Keep the tires inflated, charge the battery regularly, and have the brakes and drivetrain checked once a year.