Is this a good bass for a complete beginner?

Yes, as a low-cost starting point. It is a standard 4-string right-handed bass, so the layout and technique carry over to other instruments. Budget for a setup or learn to adjust the truss rod and bridge yourself.

What comes in the kit?

It is sold as a kit, so it includes the bass plus starter accessories. The exact contents of the bundle are not detailed in the specs, so check the box contents before buying if the extras matter to you.

Does it need a setup out of the box?

Plan on one. Budget basses commonly arrive with high action or imperfect intonation, and a quick adjustment makes it much easier to play.

What is the rosewood fretboard like?

Rosewood is a common, comfortable fretboard wood with a warm look and feel. On a bass at this level it is a nicer touch than the painted or synthetic boards some rivals use.

How does it compare with a Squier or Ibanez beginner bass?

Those cost more but come with better-known quality control and stronger resale. The Winado undercuts them on entry cost, so choose it if budget is the priority and you are willing to do some setup work.