I have a Cosatto Close to Me cot available.
You can see one here:
http://www.madeformums.com/reviews/cots ... /123.html)
It is designed so that you can have one side completely down and put up next to your bed to co-sleep. It can be used as a normal cot. With the mattress at its lowest setting and the side down it can be used as a bed (which my son has done for the past year). The cot has 6 different mattress heights (23 cm, 29 cm, 35 cm, 41 cm, 47 cm, 53 cm.) It's not as big as a cotbed, so will only last until 2-3 yrs old or so...
I have the mattress - which is in a washable cover, but was always covered with another cover as well. The internal dimensions for the cot are 120 x 60 cm (length x width)-- if you don't want the mattress I've got, the manufacturers recommend you use a Cosatto 120 cot mattress.