Answer: 冥土カフェ or 冥土喫茶
To figure this one out, you need to know a little bit about the Buddhist afterlife in the Chinese/Japanese tradition. The mythology says that after one dies, they go on to an underground gauntlet of sorts, where they have to endure all sorts of pains and trials as they make their way to reincarnation or hell. It seems that there are variations on the specifics of this journey and its exact nature, but this is the long and short. In Japanese, this purgatory is called 冥土 (Meido). As you're probably aware, there are also novelty cafes in Japan where one can find servers dressed as maids. These are quite aptly called "maid cafes." Both "maid" and "Meido" share the same pronunciation - 「メイド」.