Its approx. 30 minute walk into the main part of the city.
I hired a moped for the few days I was there(150BHT a day), well worth it. A lot more freedom to go and explore.
Apartment was very modern and very clean. Location is a little out the way of the main areas, but for the price. You will not beat the cleanliness and the tranquil surrounds. Great little place to relax for a few days.
Definitely stay again if back in Chiang Rai.