Fabulous solution when space is too tight for a standard hinged door. You can also put furniture on the walls next to this opening, just leaving enough space behind the furniture for the doors to slide.
Mini Kitchens Design With Small Cabinet For Small Spaces. I would be okay with having smaller appliances for the most part but I am not sure about having a mini refrigerator. I like fresh food, so a really small refrigerator might not work for me.