Pension AidavsArrizul Congress Hotel
Both hotels are highly recommended by professional travelers. Overall, Pension Aida is preferred by most reviewers compared to Arrizul Congress Hotel. Pension Aida comes in at #17 in Donostia-San Sebastian with approval from 2 sources including Rough Guide, Lonely Planet.
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." 
 i 
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
Arrizul Congress Hotel
 Oyster
C/ Ronda, 3, 20001 San Sebastian - Donostia, Spain
From $430/night
- Bar/Lounge
 - Free Internet
 - Laundry Service
 - Restaurant
 - Fitness Center
 - Family Friendly
 
Upper-middle-range
 "Hotel Arrizul Congress is a modern, three-and-a-half-pearl hotel located in the Gros district of San Sebastian, close to Zurriola Beach and the Kursaal Congress Centre." Full review