I'm about to move my place of living and my company HQ at the same time to a new location. It's a 2-story building with rather thick concrete walls, and when I tried to put my wifi router/access point there I could cover one room with decent quality signal, and in other rooms I barely could connect my laptop to the network.
I'd like to have a single network inside though, not several different ones, as it easies the stuff like sharing files and accessing other's computers without setting VPNs.
I was thinking maybe it would be an option to put an access point in each room, connect them all via ethernet cables to main router - but how could I then have the same network on all of them? Wouldn't it lead to some conflicts between different points in the network infrastructure?
What is, generally, advised solution in a situation like this?