Another option is to have the portacot in your room with you (these often have a bassinet attachment or similar)

I think dachlostar mentioned the baby snuggler things you can put in the cot, I think they are heaps cheaper, I'm sure you could buy one on ebay or borrow one to see if it suits you.

Personally both babies went into the cot, although no. 2 slept in the portacot in our room for 90% of the time until 4 months old (so I could have her nearby).

There is no medical/physical reason why you should use a cot over a bassinet or vice versa so do what you feel most comfortable with, although the option of borrowing is a really good idea as They do grow out of them very very quickly. The hammocks seem to last longer.