Hotel Amadeus/Seville

Much more likely that they haven't opened up booking this far ahead. It's common for independent hotels to do this. Try starting a dummy booking for next fall, trying various dates till you figure this out. For example, I see that they have rooms on random dates this October, about six months from now. Try November, December, etc. till you see how far ahead they'll book. Then mark your calendar to do the booking that far ahead of your desired dates, or thereabouts. This is a popular hotel but not so popular that it will book up way ahead of time.

I doubt they are sold out so early.

On second thought, you might consider calling them to confirm that they are actually sold out for your dates.

My mom and stayed at the Amadeus Hotel, years ago, and they only had vacancy for 4 out of the 5 nights we were in Sevilla. When I called to find out if they would notify me if someone were to cancel I was told that RS tours stay at their hotel and that there wouldn’t be any cancellations.
We ended up spending our 5th night at Hotel Fernando III just steps away from the Amadeus.

Happy planning!

If you want to reserve something now, Hotel Boutique Casa de Colón has availability on Booking.com for March 2025. Excellent rating of 8.6 and a nice location.

During our last stay in Sevilla in February, we stayed at Las Casas de El Arenal and were very happy with it, also. It’s just a few blocks from the cathedral on a quiet street.

Looks like they have availability thru January 20th, so perhaps only take reservations 9 months out? I cheated and looked them up on booking.com where you can bring up a calendar by month and look for the "-" line to find where it is not available yet.

We ended up spending our 5th night at Hotel Fernando III just steps away from the Amadeus.

I loved Hotel Fernando III. Best breakfast ever. Tammy, the Amadeus/Fernando area is great, you're going to love it. So close to Casa de Flamenco, too.

Thanks everyone! They finally responded to my email and yes, it’s too early. I will also check out the other hotel mentioned, thank you Jean and Mary.

Just my opinion, but I say be patient and book the Amadeus.

I stayed at Hotel Posada del Lucero in Old Town in 2019 and it was very nice, with good air conditioning and a pool on the roof.

They were so nice to us. We were an hour or so early for check in (their check-in is at 4 pm) and just casually asked if we could check in early. We couldn't but they apologized and gave us a drink and a breakfast voucher! (We hadn't included breakfast.)
During our 4-day stay they even gifted us a bottle of cava on ice! Wow. No, it wasn't our honeymoon! Haha. They even got us skip-the-line tickets to the Alcazar with a senior discount. Great service.

March 2025 isn't open yet for booking.

We enjoyed our stay at Amadeus when we stayed there. It was in a good location for visiting the sites in the historic center.