This "dining hall" looks amazing but almost overwhelming. I'm not in the ballpark for a restaurant with Michelin stars, but I'd ask for some help in finding a comfortable mid-price restaurant or bar among all of the offerings. Will be there in late April if that matters. Thank you.
We enjoyed a lovely restaurant that the locals frequent in the Huertas neighborhood. It's called La Sanabresa. We enjoyed the food and the vibe. We ate their twice. It's considered mid-price and included wine with our meal.
There is so much amazing food throughout Madrid, making your inquiry a bit too broad to answer. Maybe it could narrow down if you have specific criteria for neighborhood, cuisine, occasion, etc.
As a general recommendation I’d suggest looking at the Spain Revealed YouTube channel. He was a founder of Devour tours, and makes of of Madrid food content.