I'm not sure, but I guess a relatively developed country without a big nosy state would do (or one that doesn't care about the Internet/speech censorship/spying on people). Other obvious places where you don't want to have your servers: Australia, USA, UK, Russia(duh), Turkey.

Case study: Vincent Canfield, of the half-joke email provider cock.li, moved his servers to Romania after them getting seized by German prosecutors.

https://arstechnica.com/tech-policy/2016/01/cock-li-server-s...