“Why not just get my nephew to do it?”
Honestly, if your nephew will post to your Google profile eight times a month, upload fifteen job photos, reply to every review inside a day and send you a report — hire him. He's cheaper and he already answers your calls.
What usually happens is he builds the site over three weekends, it looks decent, and then nothing gets touched for two years because he got a real job. Building the site isn't the hard part. Doing it again every single month is.