We really enjoyed our stay at this apartment. It’s literally a shoebox, but it’s thoughtfully laid out. I think it would be difficult for three people to stay there - not impossible, but the space is quite limited.
They were very responsive. We had a minor Internet issue, but they resolved it quickly.
The apartment is about a 15 minute walk from the red line. The purple line is closer, but doesn’t get you to tourist areas (without needing to interchange). Nonetheless, there are plenty of restaurants and convenient stores around.
The walls are a little thin: I could hear the neighbors on either side of me. It didn’t really bother me, though, as nobody was loud during overnight hours.