OK, bear in mind that I did this without kids SEN or not, so adjust accordingly 😊. It was one of the best multi stop trips I've been on (so far). OP I did it all by train, very inexpensive and booked ahead using the Renfe app.
Flew into Seville. 2 nights, that was plenty for me, it is a fabulous place. Highlights were the tapa streets at night time, the Cathedral (didn't go in, but it's fab from outside anyway), the Alcazar, walked down by the University, (fab) and on to Plaza Espana and then by the riverfront and over to Triana. Loved it all.
Then took train to Cordoba 2nights. Now that little city blew my mind. There was just something very atmospheric about it from the winding lanes of the Jewish Quarter down to the Mezquita which cannot be missed, the patio displays, crossing the famous bridge and much much more. Highly recommend.
Then train to Granada.2 nights OK the Alhambra was great, but honestly..... the view from the lookout spot opposite was even better. But if you go to Andalucia you must go to the Alhambra! It was busy but timed and it took hours to see it all. You have to reserve a time for the Nasrid Palace, but you can arrive at any time around that. Remember to bring ID, you will not be allowed in without it! I thought the Gypsy quarter, the Albaicin, the lookout points with gypsy guitar buskers etc. was brilliant. There's so much more, that's a flavour.
Then train to Malaga. 3 nights. Flopped out here, no more sightseeing thanks, but I found time for shopping on Calle Larios, and walked around the newly upgraded Port area, and had a meal in the amazing El Pimpi. The tapas scene is wild at night, lovely. You will find as much or as little as you want to do here. The beach is OK, not golden sand, but the train goes to Torremolinos/Fuengirola up the road where it's all happening Beach wise.
Super trip, and I hope you don't think I am taking over your thread. You can possibly see how much I loved the whole thing, and I hope you do too!