Hello there! I'm King Arjen III of the Kingdom of Ertia. I'd also love to offer you a place in my Kingdom. Your tale especially intrigues me because Ertians have been interested in the healing arts for many ages, and my capital, Florae, has a great deal of flora that have been found to have healing properties of certain varieties. In our newest settlement, Amora, we even have plans to build, what I believe to be, the first large hospital in the Empire. As a physician, your skills would certainly be appreciated in the Kingdom. I'll take some time to answer some of the questions you posed.
1) are there any taxes/levies required of serfs in your region?
Nope! Ertia prides itself, like many other nations, on being tax free. We do collect iron generator taxes, as that is an Empire wide tax used to help fund construction of the Imperial City, but other than that you are free to use your collected resources as you see fit!
2) do you have an exact number (or rough guess) of the current population of your region?
This would be difficult to say exactly, as Ertia has never had an official census. I would think that our largest city, Florae, would probably have upwards of 10,000-15,000 people living there at any one time.
3) if you had to describe your region in 3 words, what would you say?
Progress & beautiful architecture
I'll post some pictures of the various large cities in Ertia for your viewing pleasure


The newly founded city of Amora. A co-build with my ally Count Atryl of DorEryn.

The walls and entrance to the city of Florae, capital of my Kingdom.

The city of Three Rivers, located in western Ertia.
The Kingdom would appreciate someone with your ability and prestige, and I would love to have you as my vassal.
For Glory!
King Arjen III