Looks great and it would be easy to take apart to clean at the end of the nesting season. Neat gift for kids too.
Where I live there are several birds that are considered predators of other bird eggs and chicks so the porch on this one would only help the predator gain access. Also it helps to have the entrance hole sized for the specific bird you are attracting. That way bigger birds can't get in. For example, tree swallows need 1 3/8" or 3.5 cm