When it comes to rentals, the less complicated the better ! I have some ceiling lights on a remote to make them dimmable - it is a headache every time. The ceiling lights do not work.... I installed those because it is my home too, and I wanted to be able to dim the lighting. Most get it in the end, but when I returned after my latest guests, the remote was set to lights that do not exist 🙂
Turning on the Sat TV seems to be complicated too as there are two remotes, one for the tuner and one for the TV.
A built in dishwasher with a digital display can be a major hurdle for some.
Cooktops are best if they have buttons instead touch control. Sadly, they only make touch control nowadays, so I pray that my 12 year old cooktop will have eternal life.
The simpler the microwave the better, same with oven.
A central light switch @Donna240 yes, they do exist, even with a remote.
User manuals are there of course, but I did not know I needed one in Polish, so I binned it.