I don't thnk it makes much financial sense to buy a house in Taiwan.
I live in a place in Neihu, that my landlord wants 15,000,000 NT for and I pay 20,000 NT rent per month. It is in a beautiful location not far from DaHu lake with mountain views. It would be impossible to buy a place like this. The mortgage payments alone after borrowing my 2,000,000 at 2% and the rest at 6% would be about 70,000 NT per month.
Places like mine are not impossible to find in Taiwan, obviously. With a little persistance and flexibility about where you want to live they abound.
However, the smart money would be to buy a place in your home country where it almost certainly will appreciate over time. As much as it is a hassle to look after from afar, it's still worth it for the capital gain, and peace of mind. Buying at the right end of the market can sometimes help with ensuring good tenants the type that pay off your mortgage for you. And it's the easiest way to leverage 50,000 dollars into 300,000 going.