Cot or co-sleeper or travel cot?

Co-sleepers are normally smaller and take up leas space, but that also means your baby will outgrow it more quickly. Playpens are bigger (about a metre long?), and these, in fact, are the “baby cots” provided in many hotels when you request for one. My daughter could sleep in it even at the age of 3 when in the hotel (she slept well 😁). You will need to get a good and firm mattress though, otherwise baby will sink in.