I think some of an inmate's comfort is dependent on the jail and what their people are doing for them from the outside: there are special ICare programs that deliver hot foods up to once a week of pizza, hot wings, chip & drink packages which can be ordered for inmates. He will also have access to store/Commissary once a week -- coffee, soups, drinks, some additional food items and spice packets to make jail food more palatable. It really depends on what 'his people' are funding.
This above is based on a relative's recent incarceration. That said, funding iCare packages and prisoner accounts is expensive. The same with phone accounts. In his almost year spent in a county jail, my relative was given outside yard time on only 5 occasions and rec time in the gym maybe 7 or 8. They sit, play cards, watch TV, and eat baloney sandwiches once a day. Read, if they are so inclined and someone cares enough and can afford to send books.
The other inmates were generally not a problem, not like the '60 days in' programs show social interactions in jail at all. It isn't freedom by a long shot, but it was more like a strictly disciplined residential 'camp' experience (his words). Prison, however, has been a completely different kind of experience.
I could be wrong, but the Hines Park attack makes me feel that way. 
