In a salon I like to see:
fresh new magazines, not piles of weeks or months old tat. Don't mind what type -gossip and fashion are good, across the range from OK to Vogue.
Choice of hot & cold drinks in nice mugs or glasses.
Fresh flowers on reception
Clean and well-swept floor
Clean tools of the trade (obviously!)
Not to be seated in view of passers-by.
Water at a consistent temperature, preferably warm(!)
Comfy neck basins, and lovely juniors who want to practise head massage on me.
Friendly staff, not gossiping amongst themselves.
Up to date and well put together style books.
(I did miss all this, when my hairdresser went mobile, but now I appreciate the luxury of not having to leave the house to get my hair done, and at half the price)