You would need to do some pre-planning before going ahead with this and it's not as simple as Google Home for sure. For example, my household went all in on Zigbee lights and switches so we had to get a Zigbee antenna to connect to our old laptop running Home Assistant and make sure all our cool LED smart lights and other cool gadgets were compatible, etc. I'm also tagging @ISometimesAdmin who did a lot of the networking stuff in case he wants to add anything.
I'm attaching an image of my dashboard setup for my room, just as an example of what can be accomplished. (This may not federate to Lemmy so I will self-reply with a link if necessary) This shows my and my household's location, the downstairs Sensi thermometer climate (which can be controlled), the light controls, temperature/pressure/humidity which is a little Aqara sensor from Amazon, and the Air Quality comes from my Winix air filter which can also be integrated to Home Assistant. You can really do a lot.