I've been looking at these for a while now, thanks for posting the vid, info is scarce on these. Did you feel the heat of the fire reflecting when you had it at that distance away?
That's a nice shelter ! A modern "campfiretent' or "bakertent'. The name lavvu is a bit misleading. You could take a look at my Cabela's Hunter Bivouac video. I made some modifications like the 'Whelen leanto"wings I added to the awning. Maybe you would like to ad those to your tent aswell. Good luck with your new shelter !
Lavvu is a Polish tent with one central pole. there are two designs with very similar names, it appears. it confused me for several videos. try searching both spellings and see what you think.