Stayed with Dave for six weeks (Jeff was away for most of the time) and really enjoyed the stay! They are so, so easy going, accommodating, and engaging. Dave is a great cook (when he's home) and coffee brewer as well, had the pleasure of sampling his food on some occasions, never the coffee though, unfortunately.
The place itself is great, very clean and well kept. Throughout the 6 weeks I never saw a dirty dish, full trashcan, empty toilet paper roll, dirty shower, etc. Very spacious as well, and located really close to the L and local places to get food. The apartment is externally-facing and right next to a somewhat busy intersection and gas station, so not the most quiet by any means. The majority of the time it wasn't an issue for me though.
All in all, really liked the place, and would definitely stay here again!