We were able to find the flat easily and Adriana was welcoming and helpful. The flat is as described. It's only small and relatively simple but it's in a great neighbourhood, it's easy to walk to the Arc de Triomf metro or to walk into the old city. There's some great restaurants and bars nearby - we loved Ale and Hop and Lolea Bar. The beds were comfy. The kitchen is new, the fridge small but we only had breakfast there anyway.
The one thing to remember is that there is only one small window and it only opens partially onto a courtyard so it can be hard to get air into the flat. There was no road noise which is great. We did hear the neighbours in the courtyard but that was only in the morning and evening.
Also, the flat is on the 3rd floor and the stairwell is very narrow and uneven so it may not be suitable for people with access issues.
Overall, a good stay.