This guesthouse is probably the cheapest one on Koh Lanta. We had a great stay here for 10 days. The room was clean, spacious and comfy. We paid 370 baht for a double room with AC, which worked very well! They hire out scooters at a very cheap rate so we hired one on most days to explore the island. The staff are very friendly and were a great help when our laptop broke. Free tea and coffee and excellent cooking facilities. Excellent wifi too, they have a router on each floor.
If you're travelling on a budget this place is great, it is close to everything in Saladan and met all our needs. Thank you Lanta House!