It may be just as good without mesh, depending on the building. I have one central modern AP in the house connected by POE, and a cheap AP (also ethernet, as the servers are there too but old, 2.4GHz only) in a workshop separated by a four foot thick stone wall. Wifi signals are rarely detected on the "wrong" side of the wall and only I work in the workshop, so an inevitable reconnection as I go from one to the other is no problem. I just use different SSIDs.