The Jinjiang Inn is reasonably cheap, while giving you decent quality. I would recommend this hotel for short term visits as the lack of a mini fridge can be inconvenient. The bed also isn't particularly comfortable, so it's fine if you're there for a while, but the hard mattress will make longer stays unpleasant.
This hotel is very close to Chifeng Road Metro station, you just walk out of the North end of the station, cross the street, keep heading North and it's the first building to the left. Staff are reasonably friendly, though they are not particularly well versed with Expedia, so make sure you tell them which name it was booked under (e.g. if you have a Chinese and English Name, specify which name you went about using.
Be warned that rooms may face the Metro viaduct, so the sound of trains thundering by can be a bit of an annoyance, though it's generally manageable with the windows shut. Air Conditioning in the room is good, but bathrooms aren't great. Sure, it's a sitting toilet, but the shower in my room was unlit, and the faucet actually came off when I turned it the wrong way, causing water to splash everywhere.