For a pleasant drive up to the Alpujarra I normally take people to Pampaneira

You can walk around the village for a while to see the whitewashed houses and flowers in the balconies etc.

Then in the main square there are 2 or 3 restaurants which are good.
There is also a pizza restaurant.

For a very brief introduction to the Alpjujarra click on this link
https://granadainfo.com/alpujarra.htm

Most of the villages have restaurants.

A friend of mine recommends the Fragua in Trevelez

It is much more convenient to go buy car but you could go to the bus station and get a bus.

Get your guide to a day tour to the Alpijarra for 71 euros per person More info