Green’s Dictionary of Slang

1. (US) a cheap hotel which rents out its rooms by the hour to prostitutes and their clients or to illicit lovers.

1955		B. Schulberg On the Waterfront (1964) 62: How’s about you’n me sneakin’ off for the week-end? The No-Tell Motel, huh.
1979		M. Cohen Sweet Second Summer of Kitty Malone 66: Now, lying in this rented room of the No-Tell Motel, Pat Frank wasn’t sure.
1987		W. Glenn Duncan Rafferty’s Rules 75: A no-tell motel the other side of Central.
1990		S. Morgan Homeboy 4: She’d been at it [...] in no-tell motels, on street corners.
1992		Hosansky & Sparling Working Vice 225: The vice men rolled past Odell’s ‘No Tell’ Hotel on East Fortieth Street.
2001		F. Stephenson An Unlikely Journey 344: Wanda has a potent sex drive and with her looks, she would have no difficulty sweating up the sheets in the No-Tell Motel of her choice.
2005		D.L. Edwards Sweet Dreams 26: David [...] still hadn’t figured out how to explain his being at a no-tell hotel in the middle of the night.
2021		T. Pluck Boy from County Hell 56: No-tell motels, flops, or the back of the Dodge Magnum wagon.

2. attrib. use of sense 1.

2005

M. Herczog Frommer’s Las Vegas 110: The ‘no-tell motel’ look of the older rooms has been updated to more closely match the decor of the rooms in the new addition.