If you are reading this review you must be considering renting Aide's place. Well no need to think too long, just book it, it is a great place! In fact, the whole experience was much better than expected. I can be very picky and with Aide's place I really struggled to find fault.
First of all, I booked this at the last minute and the communication through the Airbnb app with Aide was easy and responsive. Additionally, Aide sent a separate email with enough information to cover everything we needed for the weekend.
The journey from the airport on the bus to Aide's place was very easy as he is located near the first bus stop and then a 5 min walk to the apartment with his office next door to make the handover of keys very simple. It could not be easier. He was there to greet us and gave us a thorough tour of the apartment equipped with more guide books and information. He is such a nice guy, very pleasant and welcoming and has created a very nicely designed modern/contemporary home. Everything is there that you need with a supermarket around the corner and a number of pintxos bars and restaurants within minutes of walking distance.
The apartment is also located for easy access to the Guggenheim (7mins) and the old town (10mins). One can literally walk anywhere from his apartment. Two of us stayed in his apartment and I think it would also work for 4 people as well.
You will not be disappointed with this place; I could happily live there!