Mid and West Wales Fire and Rescue Service appliances from Llanelli attended a fire at the Diplomat Hotel, Felinfoel in the laundry room on the ground floor.
Crews used four breathing apparatus, two hose reel jets and two thermal imaging cameras.
Multiple rooms were heavily smoke logged. Crews ventilated the rooms using a positive pressure ventilation fan. 25 people were evacuated from the property.
Help keep news FREE for our readers
Supporting your local community newspaper/online news outlet is crucial now more than ever. If you believe in independent journalism, then consider making a valuable contribution by making a one-time or monthly donation. We operate in rural areas where providing unbiased news can be challenging. Read More About Supporting The West Wales Chronicle