Madrid - Seville & Cordoba - Granada - Madrid

It’s difficult to make comments since many of the listed places are not popular sites and how long you’d need to see them is completely unknown. Actually, it’s very eclectic and looks like a computer/AI/ChatGPT generated it.

You can look up grocery stores before going over. Many markets are no longer traditional markets that sell fish, fruit, etc. Many are now large food halls. The are many Chocolaterías and the one you listed isn’t one of my favorites.

Some places like the plazas de Colón and Cibeles don’t take long to see. While in that area look for the lucky frog sculpture and we’ll as Botero’s Lady With Mirror sculpture. Retiro park can take a while to walk through. If there are no exhibits at the Crystal Palace it can be seen in a couple minutes.

Day three is interesting. Visiting a stadium just to visit it makes little sense to me. Likewise, there are El Cortes Inglés department stores in all large cities. Most have grocery stores in the lower level.

The Royal Chapel in Granada doesn’t take long to visit.

I don't know if this is a first trip to Spain or a return, but if it's your initial visit, I'd rethink some of the actual sightseeing destinations.
In either case, I'd suggest saving Madrid for the end of the trip. Take the train to Seville and stay 4 nights. Next Granada for 2 nights, and then Cordoba for 3 nights. End in your departure city, Madrid. That's 4 different accommodations in a relatively short time but if you plan your sightseeing and get necessary admission tickets ahead of time, it's do-able. Also, become familiar with the Renfe site so you know your train options and can select the faster trips.

I agree with Anita's suggestions. In fact, they are similar to our recent trip, which might help you. Here is the link to my report:
https://community.ricksteves.com/travel-forum/trip-reports/trip-report-analucia-and-madrid-in-november

Also, in the report, I include names of some guides recommended by Rick Steves and forum members. They were excellent and easy to book online. You might want to consider them, instead of using Get Your Guide.

I'd recommend paying for the Prado (if you are seniors the reduced price is great), so you can take their amazing 90-minute tour, which is a bargain at about 10 euros.

I don't understand this and where you got. these recommendations from. For example, the "Granada recommends."
What does that mean.....places you want to eat?

Near the Plaza Colon in Madrid there are a group of sculptures depicting Coumbus' voyages from the point of view of both sides. I do't even know the name of that grouping but I found it fascinating.

Where/what are the hotels?

I like Anita's suggestion as well. Might I suggest you do Sevilla then Cordoba, then Granada. I think that way it would be easier to travel by train.