I set up a mesh network in the house this afternoon. Took about 45 minutes. It’s Working great so far — at last we have a single WiFi network that extends throughout the whole house, from corner to corner. We went for the Logitech Orbi model, rather than the more well-known Eero or Google, because the Logitech seemed to be more well-reviewed.
Ask me again in a month if this continues to work well.