Any improvements to my itinerary?

As much as I love the idea of a week in Sevilla, it is a very long day trip to Granada. I think I would prefer to shave off two nights from Sevilla and stay in Granada those nights, as you can fly to Barcelona from there (though verify that flights are not seasonal).
I would peruse Booking.com and see if the places you tend to like are looking booked up. They have free cancellation policies so no harm in booking in advance.

I agree with Valadelphia; Granada is too far from Seville to treat it as a day trip. It's 150 miles by road. The Alhambra can easily require more than half a day, and it's not the only thing to see in Granada. Andalucia is very large; it's not a single-base sort of area.

Even going by train will take over 2-1/2 hours each way. If you don't want to get up super-early to get the 7:35 AM train, you'll have to take the 9:30 AM departure, which won't get you to Granada until 12:04 PM. Your return options would be at 5:45 PM or 7:45 PM. (Those times are based on the current weekday schedule.) Early departures can be a challenge in Spain because of the extraordinarily late dinner hours.

Buses are somewhat more frequent, and Spanish intercity buses are comfortable, but they're scheduled to take 3 hours and are subject to traffic delays. The first ALSA bus departs at 9 AM and is scheduled to arrive at noon. (There may be other options in addition to ALSA.)

Thank you ! I was wondering if a day trip to Granada was being a bit too ambitious.
Have decreased our stay in Seville from 7 nights to 5 nights … will instead add the 2 nights in Granada and fly to Barcelona from there …. Checked and there are nonstop flights available for our date.
Also, I booked El Rey Moro in Seville for the 5 nights … free cancellation policy! Thanks for the suggestion.
Any suggestions for the 2 nights in Granada?

I am happy to see that you are spending 2 nights in Granada instead of visiting as a day trip. The hotel we stayed at has closed permanently. It was located on the road that parallels the Rio Darro. We like the location. At the bottom of the Albacin. Perhaps you can check out that area. Some people like to stay near the Alhambra.

In Madrid we stayed at the Mercure Madrid Centro. Excellent location. About a 5-10 minute walk from the Prado.

In Barcelona we stayed at the Hotel Gran Via in the Eixample neighborhood. Very convenient location. We walked just about everywhere.

I wouldn’t wait to book. Shoulder season is busy everywhere. You could book through booking.com. They have good cancellation policies. So if you find something better or less expensive, you can cancel.

Trip planning is so subjective. Cordoba as a day trip, yes. Granada as a day trip from Seville, too ambitious. For what it is worth, my two favorite cities in Spain are Barcelona and Granada.

This article is a bit dated but lots of hotels in Granada are listed here:

https://www.telegraph.co.uk/travel/destinations/europe/spain/andalusia/granada/hotels/

We stayed here in Granada
Loved it
https://www.urbansense.es/alojamientos/granada/u-sense-granada-centro.html?utm_source=GMB&utm_medium=organic

Also stayed at their hotel in Sevilla
Great location
https://www.urbansense.es/alojamientos/sevilla/u-sense-sevilla-centro.html

You need another night in Madrid. You only have one full day to see this capital city as you are going Toledo one of your days.

If you are going by bus or train, a day trip from Seville to Ronda and back might be a lot of travel time.

I think there's a company doing a one-day bus tour to Ronda and at least two of the white villages. I knew it wasn't for me because I wanted. Ore,time in Ronda, but for someone wanting to see a bit of Ronda and at least a couple of the smaller places and having only one day available, it's probably the best option from Seville.