I had a Sage Nespresso Creatista Plus machine for a number of years which I loved, it has choice and simplicity within it's menu functions, and is very easy to operate once you have stored your preferences.
I have now replaced it with a Grind One machine and Milk Frother, which I think is an even better machine (reviews confirm it is a highly rated machine in tests) and is as simple as a pod coffee machine can be. The Grind One has a very small footprint and is a very good looking machine, so your wife will likely approve. https://grind.co.uk/products/grind-machine
These would be my two recommendations for a good quality and simple to use pod machine, both produce very good results, Grind just edging it to the top spot for me based on pressure, consistency, simplicity and looks.