As another guest commented, Cesar is the host we always want to have. He is helpful, communicative, and enthusiastic.
The apartment is in a large block, so you must expect some sound from the other residents, but really it was fine.
Parking was in a secure basement garage, easy to access. I think we took the car out only once, as it is hard to park in the old town area, much better to use public transport.
A short walk from the apartment there is a big supermarket, and also the tram / light-rail station. Cesar helpfully provided us with a BAT card to use (we had to put our own credit on it), and the BARIK card from Bilbao also works on the tram.
In the other direction, also a short walk, is the Centro Civico, with a swimming pool.
The apartment is spacious, with 3 bedrooms, 2 bathrooms, a living room and off the living room a dining room. Everything is very well maintained, and the appliances are of good quality and fairly new.
I have no hesitation recommending Cesar and this apartment - you will enjoy your stay in Vitoria.