Can anyone recommend a good travel cot? We borrowed one from a friend and it's a total pain to put up and take down, plus the mattress is really hard and DD (3 months) does not seem to sleep well in it. We've spent ages researching online and thinking about the Obaby one although someone said this was hard to disassemble. (I'm seriously uncoordinated and not good at any kind of DIY/assembly). Just shouting out for some MN advice :) TIA