Hi, I'd have thought the portable crib would be the best option all round, as long as you let your DD get used to sleeping in it for a couple of nights before you go. Co-sleeping whilst you are away, may develop a habit, hard to break when you return, or it simply may not work, if your DD has not been used to it. Habits can develop within a few days. I know that when on a few occasions I have tried to co-sleep, for various reasons, it just did not work, and neither of us slept. If you can fit the crib in or get a smaller one, I'd go for thsi option.