Syrians are solatary, and other breeds can be kept in pairs (only same breed pairs though) however from my research it can be very hit and miss about how long the pairing lasts. And they can all quite happily live alone so I personally wouldn't risk a pair.
In terms of that cage, the depth of the base looks great, particularly for Syrians as they love to dig and burrow, however I would be concerned with the barred shelf, and also, hamsters don't have great depth perception and so although they like to climb, things should be kept fairly low to their ground level for safety reasons. Probably the most important thing to note is the space of the floor. I don't know much about other species, but for a Syrian, the minimum floor space is 100cm by 50cm by 45cm depth (the depth is to allow dee bedding but also prevent escaping if you have an open top, non-barred cage. March last year my boyfriend and I got our first pet, Syrian hamster Nala. She stays at mine, however we put equal money into her care. Although we done plenty of research, we underestimated how high maintenance hamsters are, particularly Syrians. They're incredibly intelligent, demand a lot of space, and constant mental stimulation.
With that cage I would also be concerned about the size wheel you could fit in. Depending of the species of hamster depends on what sized wheel is suitable, but for a Syrian, it is essential for them to have at least a 10 inch wheel, preferably 12 inch, as this prevent any back arching.
This is just a few bits of information that may help you out. Personally, I wouldn't use that cage for permanent living, but it could be used as an interesting extension onto another larger floor space environment