My Wife and I stayed 5 nights in this apartment and had a great time. It is very spacious and cozy, the living room is really the selling point, huge windows that let in a lot of light and nice breeze. I enjoyed lounging on the couch and reading, I think it would be good for hanging out in a small group as well. The neighborhood is great, lots of cool stores and restaurants within a few blocks.
The kitchen is small but functional, good for making coffee, small meals, not much counter space to cook a large meal though. The hosts provided a large jug of water, coffee, salt, oil etc for cooking, and this was much appreciated.
The beds were comfortable (to me), but very firm. If you like a soft bed, you might find them too hard. Plenty of sheets, towels, everything you need.
The building felt safe, and the neighbors we met were very friendly. It's a fourth floor walkup however, so be ready for the hike. You do hear the neighbors quite clearly, especially several small dogs that bark quite a lot. But everything is usually quiet after 10 or 11.
My only real complaint would be the heat; there is not AC, or fans, and the windows don't have screens, so you can't (shouldn't) keep them open at night. This was only really a problem one night, we were so hot with the windows closed that we decided to risk it, and got eaten alive by mosquitos. The following days, we opened the windows in the morning, pulled the blinds, and closed them before dark, and this was fine.
Overall, it was a very nice experience. The few caveats I mentioned might be deal breakers for some people, but if that doesn't sounds like a big deal to you, I think you'll really enjoy this place.