Does the white label hide that Votel is underneath?

Yes. With white label, the whole platform runs under your business: your domain, your brand, your logo and your pricing. If someone views the page source of the app and searches for Votel, it does not appear.

The built-in mobile app (a PWA) is white labeled too and uses the branding you set. The meeting platform and the help docs are white labeled as well, so your clients see your brand there too.