ILUNION San SebastianvsPension Aida
Both properties are rated very highly by those who travel for a living. Overall, Hotel San Sebastian ranks slightly better than Pension Aida. Hotel San Sebastian comes in at 76 with approval from 2 reviews including Star Service, The Telegraph.
ILUNION San Sebastian
 Star Service
 The Telegraph
Av Zumalacarregui 20, 20008 Donostia-San Sebastian
From $98/night
- Bar/Lounge
 - Free Internet
 - Room Service
 - Laundry Service
 - Concierge
 - Restaurant
 
 "The summer terrace is a great place to enjoy a glass of sangria or Spanish albarino, and a separate buffet room handles breakfast." Full review
7.0
 "Hotel San Sebastián is a peaceful four-star hotel in the city’s Antiguo neighbourhood, with smiling staff who are ever happy to meet guests’ needs." Full review
Pension Aida
 Rough Guide
 Lonely Planet
9 Calle Iztueta, 20001 Donostia-San Sebastian
From $39/night
- Free Internet
 - Laundry Service
 - Concierge
 - Multilingual
 - Beach
 - Baggage storage
 
 "This welcoming nine-room pensión stands in a relatively quiet location close to the main train station, Zurriola beach, and old town. All rooms are newly and brightly decorated... En-suite facilities." 
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For maximum peace, opt for an “interior” room, though those facing out are equipped with balconies (and cost a few euros more).
 Top Choice
 "The owners of this excellent pensión read the rule book on what makes a good hotel and have complied exactly... For our money, we’d say this one is very hard to beat." Full review