I travelled to Guadalajara for work and stayed at the Victoria Express (now Victoria Ejecutivo). It's not very close to the centre but it's still worth staying there. The room was very big with an extra bed, big shower room, very clean. The only problem was its very thin walls but I was told that this is the case everywhere in the city... I loved the staff - they were super helpful and made me feel welcome; they were also happy to suggest things and were never in a rush. Good breakfast and good food in general. I would happily go back.