Looking for a single noun ...
I'm sorry to be borrowing from French, here, but bon vivant (literally “one who lives well, good ‘liver’ (living person)”), from bon (“good”) + vivant (“person who is living”), agent noun of vivre (“to live”), is better than any English term I can think of, though it can come across as pretentious-sounding.
bon vivant (plural bons vivants)
1. a person who enjoys the good things in life, especially good food and drink; a man about town. see, Wiktionary "bon vivant"
Additional caveat: "biophile" is also a term employed by "deep or radical ecologists" to mean: one who extends moral consideration to all that is alive, rather than to, say, just Homo sapiens (philanthropist or anthropophile).
Late edit; a great noun plus its adjectival form,
Convivialist noun: A person of convivial habits.
See, Wiktionary “convivialist”
Convivial adjective: (of an atmosphere or event) friendly, lively, and enjoyable.
• (of a person) cheerful and friendly; jovial.
synonyms: friendly, genial, affable, amiable, congenial, agreeable, good-humored, cordial, warm, sociable, outgoing, gregarious, companionable, clubby, hail-fellow-well-met, cheerful, jolly, jovial, lively. See, Google.com “convivial”
On a personal note, Lisa, I'd just like to pass along my condolences.