Feedback on 2 weeks in Basque country, Cantabria, Asturias?

I am in the early stages of planning a two week trip for late June - early July 2026 to the Basque region/Cantabria/Asturias before spending a week at El Cuelebre, a Spanish language school in Somiedo. I’ve been poring through Maribel’s guides and reading HO threads about the region. Would love feedback on my restaurant selections so far. I am a female traveling solo so am hoping to find places that will be friendly for a single diner (without overwhelming portions of food). I’d like a nice mix of casual dining and a few splurges. I love seafood!

Sat 6/20 Land in Bilbao at 5:30 pm: Dinner at La Vina del Ensanche before visit to Azkuna Zentroa
Sun 6/21 Morning at the Guggenheim, afternoon pintxos tour with Mikel, dinner at Los Fueros
Mon 6/22 Breakfast at Mercado de la Ribera, tour of La Rioja with Mikel enroute to Laguardia for St. John’s festivities
Tues 6/23 Laguardia: any food recs here?
Wed 6/24 Laguardia
Thu 6/25 Early morning bus to San Sebastián via Logrono or Vitoria-Gasteiz
Fri 6/26 San Sebastián: pintxos
Sat 6/27 Morning in San Sebastián, afternoon drive to Bayonne via Ascain and Sare, lunch at Restaurant Larralde?, dinner in Bayonne at La Table de Pottoka or Moulin d’Alotz in Arcangues?
Sun 6/28 Morning in Bayonne, afternoon at Isturritz caves,
overnight St. Jean Pied de Port, dinner at Gaineko Benta for the view?
Mon 6/29 St. Jean Pied de Port for Monday market, lunch at Pierre Oteiza Les Aldudes, afternoon exploring Espelette and Ainhoa, dinner at Pil-Pil Enea in St. Jean de Luz
Tues 6/30 St. Jean de Luz for Tuesday market, lunch at Chez Mattin, dinner in Hondarribia (Bar Gran Sol)
Wed 7/1 Morning at Chillida-Leku, lunch at Bodega Asador Joxe Mari or Bodega Katxina (which is better for a solo diner?) in Orio or one of the many places in Getaria, visit Balenciaga museum —> overnight at Hotel Urune near Guernika, Boroa Jatetxea for an early dinner?

Thurs 7/2 Visit Guernika, lunch at Remenetxe, afternoon in Urdaibai area, overnight in Santillana Del Mar (any DINNER recs?)

Fri 7/3 Morning at Cuevas del Monte Castillo, afternoon in Comillas and San Vicente de la Barquera, overnight in Llanes, dinner at El Balama (any LUNCH recs for this day?)

Sat 7/4 Llanes —> Ribadesella, lunch at Gueyu Mar, dinner at La Huertona

Sun 7/5 Tito Bustillo, lunch at La Nansa or El Rompeolas in Tazones —> overnight in Cudillero

Mon 7/6 Cudillero —> Oviedo

Tues 7/7 - Mon 7/13 Somiedo

Tue 7/14 Oviedo

Wed 7/15 Madrid - any recs for a memorable meal in Madrid that would be very different than anything I had in northern Spain? La Lloreria?

Thu 7/16 Fly home