The Netty is quite small--just two rooms. But those rooms are luxurious and comfortable. This is what you would expect from an underground Victoria Era public toilet in the UK.
According to The Independent, the restroom in central Oxford was built in 1895 and closed in 2008. Up to two guests can stay in each of the two suites. You can see floor plans and photos here. Although there is no room service, there are restaurants on both sides of the street. Tourists have immediate access to the Ashmolean Museum of art and archaeology literally a few yards away.
-via Oddity Central