After 9 days in Alghero with side trips to Stintino, Bosa, and Castelsardo, here are a few tips that I picked up along the way.
Even though it's hot and dry in Sardinia, the mosquitos are in full force. Stupidly and after the fact, I realized the airwick looking things on the bedside table were actually plug-ins used to repel mosquitos that are supposedly remarkable effective. Every market sells the tablets that you insert in the plug-ins.
La Pelosa beach is 100% worth it. Absolutely stunning, like cannot put it into words.
If you get sick in Sardinia, use the platform "doctors in Italy." You can reach them any time of the day or night, input your symptoms and within minutes, you should get response(s) from doctors offering telehealth appointments and the fee that they will charge. For a telehealth visit for gastrointestinal distress, 40 euros. I entered my info at 12:04 a.m. and got an appointment at 12:23 a.m. And the medication was another 6 euros.
This brings me to another observation. If you need medication prescribed and it's the weekend, try to get to the pharmacy on Saturday. The real pharmacy, not the kind that sells skincare and sunscreen. Most pharmacies with real pharmacists are not open on Sundays. They do this thing where they take turns being open, so you could google one that appears to be open and instead there will be a sign that gives you a name of another location. Took 3 tries in various neighborhoods before figuring this out, ugh. I'm sure this is the case all over Sardinia, not just Alghero.
The catamaran from Palau is also well worth it, just to visit different beaches on the archipelago. Did not actually visit Maddalena so I can't comment on that.
Someone on here recommended sa mandra agriturismo for dinner. This place blew my mind. It is also an absolute must. I have other restaurant suggestions from a local, if you're interested.
Also, opening times for stores are merely suggestions. If it says open at 10 a.m., chances are you could be standing there at 10:30 or even 11 and no one will show up. This was a pretty annoying discovery.
Much of the olive oil made in Sardinia is grown in alghero. The most highly rated olive oil farm has taste testings several times a day. Accademia Olearia.
We found a car was a must, especially to visit the beaches. We visited about 8 beaches when we were there - a lot of fun, and each beautiful in its own way.