Does Such A Thing Exist?

I am thinking of taking a trip to Cape Town, South Africa with my family. However, I would really like to find out if it is possible to find a Cape Town self catering accommodation. My son has a lot of allergies, and it is pretty much impossible for him to eat in restaurants without getting something that causes him to have a reaction. For this reason, I always look for accommodations that have full kitchens so I can cook food for us that will be okay for him so he isn’t miserable the whole trip, and we don’t have to worry about where the nearest hospital is.