What is the name of the OST playing in Episode 5 of Himouto! Umaru-chan at 10:34? What is the name of the OST playing in Episode 5 of Himouto! Umaru-chan 10 minutes and 34 seconds into the episode?  It also plays at 12:43 of Episode 11
The song you are looking for is this one. The name is お風呂のすすめ. As stated in the commentaries, it is transliterated as "Ofuro no Susume".