I am lucky: I work in the village I grew up in. When I am too tired I tell my boss: "I am not productive, I am going home to sleep, I will work the remaining hours of the day at home after I wake up." My bed is then a 3 minute bicycle ride away.
On a more helpful note: I learned how to nap by having siesta when I helped someone build a house in the South of France. A mid-day nap there was common, even for those in the public sector. They reasoned that in summer it was just too hot too work.
I would do my napping where ever I'd like: the grass, a garden chair, a leather sofa. It took about 2 weeks to actually "get" it, but it did my body good. Sometimes I skipped a day because I wanted to read or w/e, but I'd still take my moment of rest.