Spain verdict
Spain usually works when the city is chosen for fit, not just for appeal
Spain is often workable for relocation, but the answer changes sharply once rent, startup cash, and route burden are tested at city level.
Spain works when
Income still leaves room after Madrid and Barcelona rent, deposits, agency costs and the difference between big-city access and Valencia-style breathing room are priced honestly.
Spain gets tight when
The plan assumes Madrid costs but keeps a reserve that only works in a calmer city.
How much the city changes it
A lot: Madrid, Barcelona and Valencia can turn the same income into three different relocation answers.
When residency burden matters
It matters most when visa, residency and registration costs lands on top of a city budget that already feels close.