I looked in the Nis, Serbia Supercharger site today. There are currently 4 stalls. The hotel was taken over by a different family a couple of years ago, and I spoke with them. For many years the hotel has specialised in catering to Turks doing the run between Germany & Netherlands to Turkey. Apparently they are trying to attract a wider clientee now. At Eur 50/night for perfect spotless rooms I', sure they'll get custom.
Any way, the point is that this site is due to get another 6 stalls in 3-4 months, at least that is what Tesla has told the owners. I'd have thought either 4 or 8 more was more likely. It is hard to avoid this site if one is doing the run across Serbia.
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Tesla Supercharger - Bosphorus Hotel : charging station in Aleksinac, Serbia )
[**** I'm about to report my own post as there needs to be some sort of eastern Europe section on TMC, there currently isn't one ****]
Mod coment: message received - I'll ask the more senior people about a Eastern Europe section, but you should be able to create a thread under "Europe" and not one of the regions in the mean time. There is already one for Turkey.