We stayed 2 nights in a room with ensuite bathroom and we were really happy!
The host, who also lives there, is really nice and would do anything to make you comfortable. He act a little bit as your father :) (so don't make to much noise at night, don't smack the door, turn your shoes off when entering the guesthouse, .. but on the other hand, he's soooo friendly and caring!). Also, don't mind leaving your valuables in your room, the guesthouse has maximum security :)
The room was spacious and had a balcony, fan and A/C. The attached bathroom was ok. Only the sheets looked more like towels but it feels like your staying with a friend.
Also the price for this rooms was only 45MYR (€11). So you get a lot more than what you pay for!
It is a little bit far from the City Centre, but if you don't mind a 5-10minute walk...you pass a lot of shopping centra.. so no complaining about that.
In short, this is the perfect place for younger backpackers!
TIP: eat a chocolate roti (not on the menu, but you can ask) in Indoori, Indonesian restaurant not far from Samudra Inn! Really really delicious!