Casa Nicolasa is very conveniently located to pretty much everything you will want to do in Donostia, and the property is very clean, modern, and nice. The staff is super friendly and kind, and were all very helpful. The room I stayed in was the perfect size, and included a lovely terrace! If you’re there in the warmer months the air conditioning works great! The bed was a little stiff and bouncy for me, but some people may prefer a firm mattress, or won’t mind this trade off for such a great location. Since my room was right next to reception I worried it would be noisy with people checking in and out, but I never was bothered by noise. Highly recommend this hotel!