I read the recent reviews on the security concerns, but fortunately I have not experienced any issues in the several stays I have had with them. In fact, I find that the hotel is a nice alternative to the normal chains I stay in while traveling on business in the area.
The Springhill Suites is a Marriott chain property that tries to provide a bit more of a livable space while traveling. I normally stay in the King suite, which has a good space that includes a living area (couch/chair), a work desk (a bit small area, but workable), and a king sized bed. There is one TV that swivels between the living and bed areas. The TV is a 42" LG with a good selection of channels. I do wish they would provide a channel guide that is easily accessible, but you have to go on a search-and-destroy mission to find it (hint: it's in the welcome binder on the wall near the desk). They use the local cable network, so they have the majority of the channels you might have access to at home.
The bed is comfortable for me, but some might think it's a bit firm. I like that. The pillow selection is good. I like that they have six pillows and some are feather-like, others are firmer. No foam, but not too bad. At least they give you some options!
The closet space is a bit light, but they have six hangars for you. There is a nice luggage "bench" near the window. Finally, there is a thermostat controlled HVAC system.
The odd thing is that there is two wash areas. One is a toilet and small sink combo. The other is a larger sink area with a walk-in shower. I like it, but it is odd. If you're traveling as a couple, or with children, you will find this convenient. The selection of soap/shampoo is decent quality.
Overall, I think the hotel is pretty quiet. I have not had any problems with noise from other rooms. I do however, travel with my iPhone which has a white noise app, that helps to drown out moderate noise. I have issues when staying in a new place for the first night or two, and that app helps me a lot.
The hotel parking is not the best, as there are only a few spots in front, but the rest of the parking is not too far away. As the hotel is near the main road - 15/501 - I can understand if security could be an issue. Criminals could jump in the parking lot, grab and run pretty easily. Lighting is OK, but could be better.
The lobby area is decent. It's not as sharp as a Courtyard (the nice remodeled ones), but they do have a little shop area (expensive for what you get) where you can buy water, pop, and various snack-type foods. They also have a bar area that stays open to 10:00pm. I've not seen it busy ever, but at least there is an easy way to have a couple of drinks with colleagues where you don't have to drive when you're done...
...but you are pretty close to a couple of decent restaurants nearby. There is a Five Guys, a Moe's Southwest Cooking restaurant, an Applebee's, and a bit further, a Kanki's - which is an upscale Japanese Steakhouse. Only Kanki's do you need to worry about crossing a main road.
I compare this hotel to three others that are nearby. There is a Sheraton that I have used a lot before trying the Springhill, which is about a mile away on 15/501 nearer to Chapel Hill; a Courtyard off of Rt. 54; and an Aloft, which is near to the Courtyard. Overall, I would say the Courtyard is slightly nicer, but only because of the lobby area (bar/coffee/snacks), and is more expensive. It also is not near to anything within walking distance. The Aloft is a bit more trendy, has a lively bar area, and is convenient to a shopping/restaurant area, but it is noisy and the rooms are smaller. The Sheraton is a more traditional hotel, but doesn't have much nearby in walking distance, but they do have a restaurant (Shula's) on the property.
Overall, I would say this is my favorite place to stay when I am in the Chapel Hill/Durham area.