Staff at a Premier Inn posted a letter through the doors of their guests telling them there was evidence that someone in their corridor was smoking weed and asking them to "immediately stop".
The hotel on Blackpool Beach had a "lingering smell" of marijuana, according to one woman's family.
Claire, 53, and her husband Richard, 56, booked their daughter Lauren, 30, into the hotel for two nights, along with Lauren's partner Danny, 30, and their three-year-old granddaughter Evie.
