contentment

The state or degree of being contented or satisfied.

[…]purſued his vnneighbourly purpoſe in ſuch ſort: that hee being the ſtronger perſwader, and ſhe (belike) too credulous in beleeuing or elſe ouer-feeble in reſiſting, from priuate imparlance, they fell to action; and continued their cloſe fight a long while together, vnſeene and vvithout ſuſpition, no doubt to their equall ioy and contentment.

Then they got out their boat from the boat-house, sculled down the river home, and at a very late hour sat down to supper in their own cosy riverside parlour, to the Rat's great joy and contentment.

Happiness in one's situation; satisfaction

The neurophysiological experience of satisfaction and being at ease in one's situation, body, and/or mind.