I’d not feel offended if someone brought their own towels I would however find it very very odd.
I host a lot, a lot a lot. But also stay with friends often. And I always go laden
i bring more booze than I will drink and leave behind anything undrunk obvs.
i always take a thank you gift, flowers, chocolate or a nice candle as said , depending on what I know the female likes.
i offer to strip the bed when I leave, never had anyone say yes, but I offer.
i hang the towels to dry after use, but when I leave I fold them neatly, and always make the bed, and ensure everything I’ve used is tidy, shut any windows if I opened them, so leave it as I found it,
as for the dog, as said I love my friends dog, but I do get irritated if she forgets dog towels and I have to get one for her paws. So op always clean the dogs paws when she comes in to avoid dragging dirt in.
use poop bags and dispose of them appropriately.
in the morning I always offer to make coffees, I don’t sit and wait to get served, and I always offer to help with the cooking, be if chopping onions, setting the table, carrying food through, and I always get off my arse and help clear, load the dishwasher etc,
I pour my own drinks, it could be just our social circle, but again I don’t sit expecting to be waited on, but as said, I always bring way more than i consume, including soft drinks.
I don’t keep my friends up, if they look like they are getting tired I go to bed, I tidy up anything I’ve used before I go, make sure shoes and jacket etc are not laying around.
i don’t lay in bed making them wait for me in the morning, but get up about half an hour after I hear stirrings, so they have some time to potter undisturbed and then offer them a coffee when I do.
i am quiet in the morning if they aren’t up,in my own house for example I will quietly potter round and also put the news on the tv but mute and with subtitles.
overall just be considerate, don’t go expecting to be waited on hand and foot, that’s just a burden, always offer to help, and don’t go with your hand out, expecting to be fed and watered without contribution.