Hey Peter,
I have two cats (1yr+2.5yr) in a one bedroom apartment and they are happy clams. The older one had a rough start being moved around a lot, someone even returned him before we adopted him. So he was always a little strung out, ever since we got the second cat he's almost a different cat, he's more relaxed, loves pets, and even jumps on your lap for affection. Stuff he never did before...he's even opening up his affection beyond me to other people. We also used a diffuser from the vets for awhile called Felliway. Not sure if you've heard of it but it's supposed to calm the kitties down when they are stressed out. It can be a little pricey though, we only use it now when we are away traveling.
I know you think you might not have room (still more space than in the shelter and its more about territory and toys to keep them busy than space) and it is also more money for food, litter, vet stuff, but having that second cat makes life a lot easier for you and the cat. I didn't really believe it when they kept saying that, but it's true. Once they are integrated properly (which took a month for us because the first cat was very territorial) they slowly become best buds and play with one another.
anyways yeah some cats like to cuddle a lot and some do not, just like people I guess...
Let me know if you ever want to talk cat stuff, I love talking about that kind of stuff!