Xacara, I'm relatively sure that
Hostal Gonzalo does not have an elevator. I didn't see any mention of one on neither their website nor that of
Hostal Corbero . Gonzalo is on º3 which is the 4th "American" floor. Corbero is on º1 which is the 2nd "American" floor. If stair are an issue, why not consider Hostal Corbero? They're a reputable hostel too, run by the same family as
Hostal Dulcinea . Not sure about Gonzalo's prices right now.. they still list last year's (?) prices in pesetas while Corbero has double rooms for 42€.
HERE you can see the address (Calle de Cervantes, 34) via the QDQ.com site for both Gonzalo and Corbero.
I honestly don't recall if Gonzalo had an elevator, but I don't think it did. Usually I write in my journal if there WAS an elevator and I didn't write anything when I visited this hostel in October 2000.
Wherever you all stay, people, please come back and tell us about it! Thanks!
Saludos, MadridMan