The location has outdoor showers :)

I went in November, but it's hot springs, so when it's low tide, the water is warm

Hallo, Ik zou dat alleen doen als ik een zwemvest zou hebben voor de vierjarige. Er kan een behoorlijke deining zijn. En een vierjarige kan nog niet zelfstandig zwemmen. Er zijn wel wat kleinere poeltjes waar de kleine zou kunnen spelen in het water, maar dan moet je eerst over een aantal rotsen klimmen en klauteren.

I had the same question! There is a great (and free) app that anyone coming to the Azores should download on their phone. It's called "Spot Azores" and it has a live webcam feed for many of the major attractions on the different islands. When you select the Ponta da Ferraria site (listed as "Ferraria" in the app), it shows the outdoor manmade pool but also gives the high tide and low tide times for the nearby ocean. Be sure to visit during the low tide times to experience the warmest water. You can also just Google "Spot Azores" and search via the website if you don't want to download the app.

Look online for the time of low tide -there are 2 a day-on the day you want to go

Greetings I advice you to rent the car quickly, previously before travel to avoid high costs ( for a week the médium price its about 160 eur total ) Go rentalcars site choose Portugal Ponta Delgada, or visit directly ilha verde rental , hertz rental or others. Ponta da Ferraria is near the Airport, there´s no bus down there, its close to the sea and once you get a map you´ll notice that is very very close to airport, about 10 min by car with no traffic. You can ask to any local that are very honest and will thell you exactly where to turn in the road to get there. Remember that from the Hill you can see the pools that are payed but when you arrive there you go to the left on foot for 5 min walk and you will find The natural pool with warm water, there´s a hole there that is very hot, very nice to sit there, like termal water.

I tried to answer this some weeks ago but my login was rejected. As people have said, the only way really is to go with a hire car or driver. To be quite honest I am not even sure whether it is worth it. There were a few people in the water and on the beach however we were not really tempted. The best part was the very good cafe restaurant where the car park is!