Never met Ana, but met her sister Marite who was super nice and helpful. The apartment was mostly clean when we arrived (though there were a bunch of dust bunnies under the bed).
The kitchen was well stocked, the wifi connection was great and even though the location is not in the center, we thought it was convenient since it is only 2 blocks to the Sant Martí metro station. The neighborhood is quiet at night so you can party in the city and still come back and have a good night's sleep (though the walls are pretty thin in the building and some of the neighbors in the building are not always super aware of their noise level, but it was generally fine).
Only bad thing was the comfort of the beds. We had read a couple other reviews that the first bedroom right off the living room wasn't that comfortable, but since we were traveling with another couple and their 2 kids, we thought it'd be fine for the kids. It actually was uncomfortable for them too so I'd say, until they change that bed, the apartment really is best if you only have 2 couples for the two main bedrooms and want an extra room for a little more space.
Bathroom had good water pressure and hot water that lasted through 6 people showering. There's no fan though so it gets humid in there and doesn't dry out very easily so we left towels on the clothes line to dry.
Also, we were here at the start of mosquito season so there were a few that got in since it was a little stuffy in the rooms and we had left the windows open.
All in all, it was a good stay made better by a very nice host.