The house I am in now is the first one I’ve ever lived in without a fireplace. I take flu maintenance seriously, since I have seen relatives start some fun flu fires.
The nice thing about russian/masonry stoves is since the flu is convoluted, yet there are access hatches, the combustable tars aren’t three stories up. And you can clean your flu without getting on the roof. Plus you burn them as hot as possible, which increases combustion and lowers the amount of byproducts.
However they are generally so heavy it may require a reinforced foundation. You can’t, for the love of FSM, just build one on a normal cdx subfloor.
All my last three stoves have been built on at least 100mm of concrete. The current one is sitting on 40mm of slate blocks on 100mm of screeded concrete, which is overkill but safe.
Your Russian stove looks wonderful but it is very rare to get two weeks of subzero temperatures in a year here. Disappointing because I would like an excuse to build a Siberian survivalist heating system.
Incidentally, on the Russian stove front, a German commander on the Eastern front in WW2 complained that when the weather got really cold German troops would try and find a shed to hide in - and most likely burn any wood for fuel - while a Russian would just knock up a little igloo and improvise a stove from tin cans. The idea of teaching these skills to German troops never seems to have occurred to anyone.
Tin can/rocket stoves are great. Incredibly efficient, and they work very well with small fuel. Have I mentioned if there is ever a total meltdown of civilization in cold climates, I’ll be a hot commodity?