The Pool at Ensana Thermal Margaret Island
Danubius Health Spa Resort Margitsziget's pool is acknowledged by writers. Of the 4 professionals tracked on TripExpert, 2 acknowledged the pool, including Fodor's and Oyster.
Ensana Thermal Margaret Island 
Fodor's
Oyster
Fodor's "Rates include the use of spa facilities, which are comprehensive: a fitness center, thermal baths, swimming pools, several types of sauna, a salt cave, a solarium, and host of wellness and beauty treatments"
Oyster "Features include a fully equipped spa with a salt cave, fish pedicures, a sauna, a steam room, and a hair salon, along with pools and whirlpools, meeting rooms, and a business center"
