Cafe where the waitress dress up in maid uniform and address customers as 'master' or 'mistress.' This practice is common in japan and other east/south Asian countries. The theme of the cafe is predominately anime/manga and the customers are otaku.
When you walk into the maid cafe, maids will say "welcome home master"
They perform varieties of services, such as ear cleaning, spoon-feeding, photo-taking, playing card and having conversation with maids.
For unknown reason, this is not considered a form of prostitution.
male version of this is butler cafe
Otaku: Do you want to go to maid cafe this weekend?
Normal person: But that place is unreasonably pricy!