The area is dangerous. The radiation is about the least of the concerns.
First is the abundant wildlife, with rabies affecting a large part of the population. Wolves, foxes, wild boars, cats, stray dogs, lots of rodents. It's a very serious problem and it will be difficult to contain.
Next, the old infrastructure, in major part stripped of metal parts. Open manholes hidden by vegetation, barbed wire fences hidden under layer of weeds, buildings that stood with missing windows without renovation for nearly three decades, about to crumble.
Chemical contamination - abandoned communal farms where pesticides were left in rusting containers. Laboratories in hospitals and institutions, assorted abandoned factories.
Huge forested areas with big risk of fire.
Unmaintained drainage/sewer systems causing risk of flood.
Radiation is not entirely non-issue either. Yes, the land is mostly fine. There are few open areas where restrictions are still important(like that concrete-covered peninsula, where the levels under the crumbling layer of concrete are still dangerous), but you could safely farm most of the land that was farmland before the disaster. There are also "pockets" of radiation in places where trash from the power plant area was dumped. Old rotten clothes in the basement of the hospital clock good 2mSv/s. Soil of the Kopachi area will produce plants actively harmful to health. Supposedly the bottom of the Pripyat lake is badly contaminated; if water levels fell, wind would carry contaminated dust.
It's a place where responsible adults could live. It's not a place where you could let kids loose though.