Windows as QEMU guest
Windows can run fine under QEMU and KVM, but since installing it with QEMU or libvirt directly is not very straightforward, most people prefer using other hypervisors which have a fancy GUI.
KVM is known to have the best performance as Linux host, and require no external drivers, and with virt-manager it’s not more difficult to setup than other solutions.
A proper Windows installation, with VirtIO drivers and guest tools, will run stable and perform almost as a physical machine.
This is how the system appears: