Anyone own a cat in a small apartment?

[Rike255]

I'm looking to get one (possible two...although not likely) for mine and it's quite small (700 sqft). I have a few questions:

- How do you control odor from litter box?
- Where do you put the litter box(es)? And how many do you have?
- Is two cats better than one (for company, keeping cat from getting bored etc)?
- Did you spay/neuter, deworm, declaw? How much did it cost and are they actually beneficial (especially declawing...I know this is a touchy subject and I know very little about it)?

Thanks in advance!