[xavxav]

aren't rockets like the starship almost the opposite of what you want in a space station? They want to minimize the integrity of the rocket as much as possible (without blowing up) to reduce the mass while for a station you want robustness (for pressure & impacts).

[avmich]

Starship tanks likely hold several bars of pressure and survive transportation to orbit...

[aDyslecticCrow]

That is actually with the caviat that the internal pressure help structurally a bit. But that is still plenty for a gentle rotation in otbit and 1 bar of pressure.

And if the plan is to do this; you want to prepare the rocket for this purpose anyway so nothing stops you from making a thicker wall and sacrificing payload capacity since the hull is the payload.

[m4rtink]

Starship is also meant to be reusable, so there is an additional margin already built in.