Stayed for 3 nights at Julies in January 2013 after being recommended by a friend. Arrived in Chaing Mai really early after an overnight bus ride from Bangkok. Luckily, we were so early, we managed to secure a room after check-out but I would advise you to book ahead as this place is hugely popular with travellers.
Rooms basic but you get what you pay for. For us, they were clean and in a great location. Awesome chill out area and really nice vibe which is what we were looking for. Met some really cool people and enjoyed a few beers on the uber cool rooftop bar.
Highly recommended for young travellers on a budget. Cheap and cheerful. No complaints (though the management were a tad moody!).