I have a 2017 MBP. I used to run Boot Camp for 1 Windows app I need, and it ran fine - as Blackberry Guy said it is a Windows computer at that point. But I tired of having to reboot to run the app, plus I keep my Mac disk encrypted with File Vault and the Windows partition was not encrypted - and Windows encryption solutions are quirky in comparison. So I bought Parallels and started using it, and I will never go back to Boot Camp - Parallels runs really great.
I run my app in full screen mode, so now I just leave it up thru the day - I am still only at about 12 GB of my 16 GB used with about 5 Mac apps also up, and I can 4-finger swipe to go right to the Windows app, and to go back to the Mac world. You can run in a window too of course, Cmd-Tab works to go to it even if full screen, etc., but like you I like seeing the full Windows desktop when I am using the Windows app.
Integration is great - I do Shift Command 3 to snapshot a screen in Windows, and it drops on my Mac desktop. Printers, cut and paste, everything integrates. Touchpad use is excellent, I don't use a mouse in either environment.
I couldn't be happier with how well it works! Let me know if you have some specific questions.