Best thermostat for a senior?

My thermostat is automatic. During the day I set it for 70 from 8am to 11pm. At 11pm its set for 66 until 8am. When we both worked we could set it to warm the house up before we got up, then lower the temp while we were working and then back up so the house was warm when we got home. Weekends could be adjusted separately when we were home all the time. It helped our heating bill.

Maybe something like that would be better. Then Mom does not have to think or remember. At 70 the less I have to remember the better.

Don't torture her with trying to learn new technology ;-) It seems simple to us, but to a 95-yr old...unless you want to be her constant tech person as she calls you at all hours because she can't remember how to run it. My mom is almost 91 and lives in her own home, next to mine. She has a simple tablet and a flip phone. Then my son gave us an Alexa and I've had all I can do to teach my mom to use it only for timing food that is cooking. She either doesn't remember to start with "Alexa..." even though I have the name in a bright orange sticky-note, or she doesn't remember that she has to give a very specific command in order for it to work. She gets it right about 50% of the time. She is also starting to forget how to use the oven, which she's used for decades.

If I were in your situation, I might consider a Nest so that I could control it remotely. You could print out the instructions in large, readable type and put it next to the Nest, and maybe that will work. With failing eyesight, I'm not sure what to do....what types of thermostats did blind people use before there was Alexa? Maybe check that out.