Hi there!
I am a professional graphic designer with 5+ years of experience in designing. I specialize in logo design, flyer design, illustration, app screen designing, banner designing, brochure design, business card design, corporate identity design and package design.
I understand that you need to convert an artwork to vector file with seperate layers in high resolution for print. Nothing needs to be changed. If you can improve the details in the image for eg - the chairs and tables that would be great else just vectorize it all elements. I can provide the final file in Illustrator and PDF format at high resolution.
You can check at my profile link below-https://www.freelancer.com/u/ArtGallery24
Regards,
Art Gallery24