This place was great as a short stay. Despite the shared living, I felt very safe. The two other guests were super nice and we all became friends, which also helped. Alejandra, one of the hosts, is so kind, warm, and helpful. Something of mine got left behind in the room and she told me she could ship it to me no problem.
The room is next to the street and there can be loud sounds, so I recommend bringing earplugs. The bathroom does lock, but you have to know the trick (push hard and then turn the key). The shower sometimes leaks water onto the floor, so be careful of that. It's definitely a walk from the center, but there's a bus stop within walking distance, and there are some nice places to eat nearby (including a cheap cafe down the street). My one tiny issue was that there were no hand towels in the bathroom. Overall, had a great stay.