Purchased this product as the number of wifi connected products in my home was getting increasingly larger, mainly due to a growing number of smart products, and I was concerned about possible wifi congestion issues. I have found the router to be very stable and the setup was quite straight forward. I have noticed that the wifi signal strength in the rooms furthest from the router (~13m) has improved since using the single router.
I did have some issues getting 2.4GHz wifi devices (e.g. smart light bulbs, etc.) connected as the router only provides a single wifi hotspot rather than split 2.4 and 5GHz connections. Eventually I discovered that you could temporarily disable 5GHz on the hotspot so that one can connect 2.4GHz only devices. You can do this by going to the connection problems section of the troubleshooting part of the eero phone app. Once I discovered how to do this setting up those devices was a breeze.