I stayed in room 8 at Mariana's. It was small, basic, and clean with everything I needed. Mariana was a great communicator and kindly let me drop my luggage early. The person who checked me in was also very nice. She didn't speak English, but we were able to communicate in Spanish. There are 2 bathrooms; one with a shower. I liked that I could use the refrigerator and hot water boiler. Fyi people in other buildings can see inside the room unless the blinds are down, and there was a fair amount of noise from a group of people in a neighboring building until midnight each night, but it wasn't too bad.
I loved the more local neighborhood vibe and great restaurants. It was a great value. Definitely recommend this place if you're traveling solo!