I have a crush on Communist-Style Hotel Architecture, and in the Balkan there are a lot of good examples of these state hotels (државни Хотел). Some still are run by the state and and just little investment has been done, so you can feel the atmosphere of the past time and enjoy on vintage design and architecture....
Last summer we made a family stop-over in Sremska Mitrovica and headed out for the local state-hotel "Hotel Sirmium" to stay for the night.Hotel Sirmium is good example of a state hotel with the peculiarity that it has been built on the ruins of the „Imperial palace“ an archeological site of the famous ancient Roman city of Sirmium (today Sremska Mitrovica). That explains the random ancient pieces arranged around the reception.
The hotel has around 55 big rooms, the color concept is so old that it looks almost new again :-) The dark brown is used to pimp up the rooms....
.....but it's also the main color concept for the bathrooms.
The roman theme is used in the restaurant: meandering pattern on the wall and some roman Art in soc-realist style...a funny combination.
A stroll in the city center shows another nice building from the communist past, a stylish commercial building! 
The rest of the city center is a picturesque mix of austro-hungarian baroque style and classic Vojvodina style.
Here some linksregarding Sremska Mitrovica:Hotel Sirmium
Sremska Mitrovica
Zasavica Nature Park
Fruska Gora National Park Travel Guide
More communist style Hotels:
Hotel Srbija in Vrsac
Hotel Palas in Mojkovac (Montenegro)
Hotel Narcis Strpce
