I am not sure if you know of a Youtube channel called WildYourGardenWithJoelAshton, but there he shares a lot of tips for how to make your gardens more wildlife friendly, especially for wild pollinators. Your insect hotel reminded of the one he had in one a few of his videos.

I have noticed even now people confuse wild pollinators with honey bees. It is the wild pollinators that are struggling the most and the honey bees actually contribute to aggressively taking food away from the wild bees.

If I had a land on which I could make up my own rules depending on the size of it I would have some wild meadows that I would allow to go to bloom at least or on a smaller land a few grass islands that are allowed to go to bloom so that the bees can have even bigger variety of native plants. Also looking for more native plants to plant in your garden can help a lot not just for bees but also butterflies.