Ryokan Shirasagi
English name: Swallowtail Inn
Genres: Hentai
Type: OVA, Episodes: 2
Aired: Jun 27, 2003 to Apr 30, 2004
Studio: AT-2
Source: Visual novel
Rating: Rx - Hentai
Synopsis:
Yuriko is running her dead husband's inn, which isn't doing too good financially, so she needs to provide customers with a special kind of service. One day, an injured man, who can't remember who he is, ends up staying in the inn. Although Yuriko, who develops feelings for him, tries to keep her extra work duties a secret, he finds out and actually helps her... helps her in becoming much better in providing the service that is. 

(Source: AniDB)