I guess it's technically correct that riverfront is waterfront...

Those prices are shockingly expensive to me for such small, outdated apartments in a less-desirable country like Serbia!

Belgrade is (was?) a world-class city. At least top 100

Real estate prices are way up in Belgrade recently due to refugees coming from Ukraine and Russia. Probably some money laundering as well. The listings linked above are for the new Belgrade Waterfront development, which is a fairly desirable location.

Would a refugee from Ukraine go to Serbia? My impression is that both ultra nationalism and support for Putin’s invasion are common in Serbia.

Depending on which side of the divide they were from, yes, sure. Also lots of ethnic Russians that found their environment suddenly a lot less friendly from the Baltics.

Most ethnic Russians I know from Ukraine don’t support the invasion.

One had weird men show up to her neighbourhood in Donetsk for years, that didn’t speak Russian like anyone else from Donetsk, and start violence with locals and then the police. This is the “violence against ethnic Russians” Putin made up.

It has to be so frustrating for the many ethnic Russians in Ukraine to see their lives upended like this and to be negatively associated with something that they had absolutely no say in. I recall a bit of video footage from early on in the war where a native Russian from the South East of Ukraine told a bunch of Russian soldiers to go home and leave the people there in peace. They were getting along quite well until Russia stirred the pot. Some of them now even refuse to speak Russian.