@Matthew800 I host a private room in my home and don't provide food, but do offer guests coffee or tea. I'll also offer them a snack when they arrive, as most have had several hours of travelling, gotten up early, and are a bit travel fatigued. I also offer use of cooking oil, salt and pepper, things that it seems silly for them to have to go out and buy when they are only cooking a few meals.
A friend who hosts a private suite in her home leaves bags of chips, maybe a couple of beers, some snack bars, hummous and other simple treats for her guests. Many have told her they were really grateful not to have to run right out to the grocery store, that it fended off their hunger and gave them a chance to relax, shower and unpack before venturing out.
Of course there may be guests who have food allergies or dietary requirements that won't be able to eat those things, but you can't be expected to anticipate that unless they have informed you of it beforehand.