@Stephanie1285 I also host a private room in my home, for 1 guest.They also have use of the kitchen and outdoor spaces. I get guests who stay anywhere from 3 days to 2 weeks. Most of the guests are out and about a good portion of the day, but they also spend time in their room, reading or napping or whatever, I have no idea. Some stay in their room a good portion of the day, only coming down to cook or make a bite to eat. I get really lovely guests and haven't ever felt in any way nervous about them being here when I'm not home. They have keys to come and go as they please, and I also come and go as I please.
I don't have a lock on my bedroom door, but many shared-home hosts do. Perhaps that would allow you to feel more comfortable? Keep any of your valuables in there and lock it up when you go out.
I also have a dog and a cat, both of which are primarily outside animals. There has never been any problems regarding my guests and the animals. But if you want to ensure that the guests don't inadvertently let your pets out, I can understand that's a concern, and you'll just have to come up with some solution to that. Maybe a baby gate which contains the animals in some area if you don't have a yard?