Ah well, Makita tools (judging by color)?
I too have a fretsaw. But it's much harder to saw straight with it.

And I recognize the second floor, looks good. By the way, I remember you mentioning last year, that there was a part of the wall, where you had to tear up some old cupboard... How warm is it inside now? Does it require a lot of wood burning or electric radiator warming up to get by?

Good luck from St. Petersburg :)