Hummingbirds will NEVER use a manmade house. They build their nests in a bowl shape from spider webs, lichens, fluff, and other similar materials. Their nests must be flexible to expand as their babies grow. A hummingbird must be able to hover and land on the nest. They cannot walk.
This birdhouse is only a decoration, so don’t get your hopes up.
Seconded! 
Hummingbirds aren’t cavity builders. Something might nest in there, but it will not be a hummingbird.
We had hummingbirds living in our birdhouse. I don’t know how long they were there, but my kids saw them in there and told me all about it. When I checked after a nasty wind storm, they were gone. I did see one hovering next to the door for quite a while once or twice.
@gwandroid, Well I guess Midwestern hummingbirds are not quite as picky as those in whatever region you are in. I’m guessing those in your area are blessed with more available nesting sites. We planted a 3 foot Birds Nest Pine just about 11 feet off the back corner of or 2-1/2 car garage about 35 years ago as a wind break (eventually) for our vegetable garden. In three years it was almost 12 feet tall and we hung a couple small bird houses in near the trunk. The next spring two families of chickadees moved into them until summer. They (&various sparrows + wrens) used them as well as (as the tree grew larger) various branches, usually well inside near the trunk. Then about 20 years ago, while weeding between the tomatoes, I saw a hummingbird zip out from the tree. I watched to see if it returned and in a relatively short time it did. It was raising a brood in what had been a sparrow / chickadee house that over the years those other birds had opened up its’ front to about a 5" diameter - nearly removed, actually. So I took an old pumpkin shaped “bird house” and cut away about a third of it, added some large red “dots” to the outside, and hung it in a relatively vacant section of tree. Nothing moved in that year, but they did the following spring. We have had hummingbirds in it and the other “ancient” birdhouse many times since then. Now that pine is over 35 years and more than 40’ tall. Many birds have nested in it, but the .ost amazing ones are the humming birds. They shoot in and out of there line little guided missiles.