Kawarazaki-ke no Ichizoku The Animation
English title: Kawarazaki-ke no Ichizoku The Animation
Japanese title: 河原崎家の一族 THE ANIMATION
Type: OVA
Source: Visual novel
Episodes: 2
Status: Finished Airing
Aired: Nov 29, 1996 to Apr 25, 1997
Duration: 29 min per ep
Rating: Rx - Hentai
Studios: Arms
Producers: Pink Pineapple
Genres: Hentai

The days at a hostal doesn't seem to be very normal. Instead the visitors get a special treatement. The maids are always on dispose to serve their masters even if it is something not really normal. Hiden room and double view mirrors are only a part of this ex-state building. 

(Source: ANN)