There are many thermal baths in Budapest but this is my favourite. Thermal Bath is a popular spot in Budapest known for its relaxing thermal waters and historic architecture. With a range of services like massages, private spa options, and even beer spas, it's a great place to unwind and pamper yourself.
In my opinion, this is the best thing you can visit in Budapest. Yes, I’ve become pretty picky after traveling around the world and it’s not easy to impress me, but I loooove this thermal baths.
In winter you can stay outside in warm water, but in summer sunbath laying in sun bed and occasionally slip in warm water for a swim in soup of people haha. My favourite time to go there is when it’s more cold, but summer is cool too. Just enjoy the history, architecture and thermal benefits. It’s fun to go with friends or with a partner to just chill and enjoying each others company.
If you want you can book online, but normally both lines, to get in without online tickets or buy there on the spot, are same length and maybe 5 min waiting time.