Self-catering is a widely used term. It implies 1) that meals are not provided, but also 2) enough equipment is provided for guests to cook their own meals.
Exactly what equipment is provided can vary. There will be at least a fridge and some way of heating up meals, eating utensils, a table and chairs and somewhere to eat. Most will have a stove, an oven and a microwave. In places like the Seychelles a barbecue is almost universal, and the eating area may well be outside. At the extreme bottom of the price range some or all of the facilities may be shared. At the upper price end the accommodation will have its own well-equipped kitchen. Food is usually not provided, although there might possibly be some basic non-perishable staples like salt or oil.
You should check exactly what equipment is provided before renting.