Another popular accomodation place in Bukit Lawang is Jungle Tribe and Resto owned by Agun.
A wonderful free standing house situated right by the river with great views of the river ,jungle and monkeys swinging through the trees.
Agun's website is www.jungletribesumatra.com/
for more information and contact nos.
and a selection of photos taken by other travellers who have so kindly allowed me to use them in my webshots album on Indonesia.
On the photos I have also added Agun's email address and mobile phone no.
Here is a recent review written by travellers who stayed there.