A configuration with a radius of 225 meters and a rotation of 2 RPMs will give you 1 earth gravity.
I think this scale of structure is do-able, maybe a bit of a stretch goal. Certainly a fraction of this is within current reach, when one looks at the 100m truss length of the ISS.
However, from what I can see, the biggest pain in the rear is where the spinning section meets the stationary central core. How do you do power hookup? Mechanical hookup that is robust and can take a torque? Not to mention if the stationary central core is habitable or needs service, how do the astronauts move between sections?
(Perhaps having the entire structure rotate is the solution for a robust craft that we can implement now.)
Labyrinthine seals as used on submarine propeller rotater units?
Another possibility is to use the vacuum of space to cause negative pressure in a small section of the vehicle.and somehow use that to hook up to a persons body to create resistance(articial gravity)...would need to be a Rube Goldberg type structure...? Calling Doc Brown.
Astronaut could do work while standing in the g unit for few hours a day...could be hell to pay is full leak occurs..just sayin’