my diabetic sleeps on my pillow so she gets food on my nightstand. because she tends to scarf and barf, i put about a spoonful out at a time and any time i wake up i put some food down. she eats mostly wet food even tho i'd allow her dry because she has cancer and liver disease and has to eat to keep her liver healthier.
i think putting the food out on the nightstand makes her feel special and hungrier for some reason, which is good for us. the other cats would love to eat there too but so far they honor that space as hers. food on the floor is fair game for everyone, and our greedier cat would probably eat everyone's food.
i think you can buy decent feeders for $35 to $60, and would give you peace of mind, give your cat something to do (wait for the magic feeder to open), and reduce some of your burden of feeding timed meals or meals on demand. i haven't heard of anyone here not liking a feeder but maybe some don't.