I don't see why not, even if u had a bigger place, I would have let them sleep together. It will them bond & each other every second.
My twins slept in the same crib until they could move and roll around then.I put them in two separate cribs
My friend has 6 month old twins and they sleep in the same crib. They spent 9 months together in the womb so keeping them together in the same crib may help them sleep better anyway.
They spent 9 months being smooshed together. I don't see why it would be bad to let them sleep together. I think its very beneficial. Multiples thrive when they are together.