A home pc is fine for hosting 3-7 or more players depending on bandwidth/upload.

Easy setup, no need for amp or pay servers. Most mods work fine as is.

https://valheim.fandom.com/wiki/Valheim_Dedicated_Server

Don't think too deep into this, and make sure to only follow the windows sections for windows.

The whole thing is essentially just downloading and tuning the launch batch file and opening ports. Not much more.