I recently stayed at Kate & Rick's garden level apartment for two weeks. In short, it was fantastic. Here are some details:
Location - The apartment is located kitty-corner from the CTA's Logan Square Blue Line (train) stop. This made travel to/from Downtown (20 min) and O'Hare (30 min) a very simply one-stop ride. That convenience alone is worth a premium. The Logan Square neighborhood is also a great place to stay if you prefer a neighborhood setting for your stay rather than the chaos of downtown. There are many excellent restaurants walking distance. El Cid has excellent Mexican food and is only about 5 doors away. It is also a great neighborhood to stroll through, with many homes displaying great architectural diversity. If you stay here, take 30 minutes to just walk around the Square and look at the buildings. They don't make them like that anymore. Nice little comic shop nearby, too.
Apartment - First, it's important to understand that this is a garden level apartment. That means it is a converted basement with about half of its height is below ground level. So you walk down a stairway of about 5 steps. There are many block glass windows so there is adequate natural light during the day, while still having privacy. The apartment looks to be recently renovated and has everything you need for normal apartment living. There are two proper bedrooms with large beds which can sleep two. There is also a third smaller bed in an off to the side den/alcove. This has a curtain for privacy. My group was three adults and two children and we felt the space was adequate. We had no problems with cooking or doing laundry.
The Owners - Kate and Rick were just fantastic. They were great with communication when we still considering several places and I was nagging them with many questions. Once we arrived and met them in person it was no surprise that they were so friendly and helpful. We never had any real problems during our visit. But for any question or request we had they were quick to reply and help with whatever we needed.
I have already recommended this apartment to my friends in Chicago for when they have visitors from out of town. I would definitely stay there again without hesitation.