Koisuru 2DK, Ayakashi Zensai Tsuki.

The manga centers on Tsukasa Ookami, a girl who has moved into a cheap, run-down apartment after she ran away from her home due to catching her fiancé cheating. She spends her days drowning her sorrows in alcohol. Eventually she meets Haruyuki Isato, a handsome neighbor, and can feel herself beginning to fall in love again. It turns out that the apartment that Tsukasa is living in is haunted by Haruyuki's late wife. (Source: ANN)