A spokesman for the Canary Islands government said: "At 4.09pm on Friday emergency services were called to an explosion in a machine in a poolside bar at a hotel in Playa Paraiso, in the town of Adeje, with several people suffering from burn injuries.
"Emergency resources were immediately mobilised. Fire crews attended to inspect the zone but their intervention was not necessary."
The Bahia Principe describes itself as hotel with "marvellous facilities, lush green gardens and infinity pool", offering an "unforgettable vacation" and "beautiful views of the sea and of La Gomera island".
The Costa Adeje resort is a popular destination for British tourists, with nearby sand beaches such as Playa de Las Americas and Los Cristianos particularly well known.
The area boasts a lively night-life in addition to golf clubs, zoos and other leisure activities such as go-karting, fishing, sailing and dolphin and whale watching.
Enjoying year-round good weather, the Canary Islands receive thousands of British holidaymakers during the cold winter months.
Temperatures tend to range from around 24C in summer to 17C in winter.