My contention is that so-called Fascist Architecture was largely the same sort of 1930s transitional (from historical ornamentation to ornamentation-free modernism) found in other countries including the decidedly non-fascist United States. Salient examples tend to be buildings built by governments. But non-government structures also sometimes followed that architectural fashion.
One example of the latter is the Hotel Mediterraneo in Rome, at Via Cavour 15, about two blocks from Rome's main railway station. The link is to the ownership group that holds three hotels clustered near the same intersection. One hotel is 19th century, but the Mediterraneo and the adjoining Atlantico were built in the 1930s -- the Mediterraneo in 1936, designed by Mario Loreti.
The Mediterraneo caters to tour groups, which is how I first stayed there a few years ago. Recently I booked myself on a western Mediterranean cruise and stayed two nights at the hotel before heading to the Civitavecchia cruise port. Below are a few snapshots I took before departing.
What is shown above are essentially simple shapes and rich materials accented by small amounts of detailed ornamentation. In other words, characteristic of the 1930s transition to ornamentation-free modernist forms.