Depends what you mean by quality of care really. Mine is on livery and it matters to me that his bed is clean, hay/water/feed are dealt with properly, that he is handled competently and not roughly and that my instructions are followed re turnout, rugging, booting etc. I also expect the yard to notice obvious or significant injuries, lost shoes etc. and to inform me and take any immediate action that's necessary. I also appreciate being able to pay for additional services when necessary, e.g. if he needs cold hosing or medication administered during the day when I can't be there. But I see and check my own horse daily so don't expect or require the yard to do things like groom him, wash turnout boots, scrub feed and water buckets, remove cobwebs from his stable etc. It's also not necessary to me for the yard staff to have a deep and meaningful relationship with him in order to be able to pick up if he's very slightly out of sorts, as I will notice that myself. All of those are things that might bother other people with different set-ups who don't see their horses daily.
As far as facilities go, I think turnout/fencing are important. Having a decent school surface is also important to me - I keep my horse because I want to ride, and rubbish surfaces that are unsafe either all the time or in bad weather are a problem IMO. The other stuff - wash bays with hot water, heated tea rooms, solariums, horse walkers etc. are really nice to have, but not important for me.