It is neither. The Western Region Detention Facility is a federal-style detention center that houses inmates for the US Marshals Service, which means it operates more like a Metropolitan Detention Center than anything you would find at the county or state level. Think of the high-security tower prisons you see in major cities like New York, Chicago, or Los Angeles. That is the model it most closely resembles.
The practical implications of that are worth understanding. Security is tighter than at a county jail, inmate movement within the facility is more restricted, there is no outdoor recreation to speak of, and vocational or educational programming is limited. It is a holding environment rather than a rehabilitative one.
On the positive side, GEO is one of the more professionally managed private facility operators in the country. The staff tend to be well-trained and the food preparation is generally a step above what you find at many county facilities. It is not comfortable in the way a lower-security setting might be, but it is run with a level of order and consistency that makes daily life more predictable.
If your person is there pretrial or awaiting transfer, communication through mail and phone is the most important thing to maintain while they wait for their situation to resolve.