Great place! The apartment has a very good location for walking trips to the main tourist attractions of the city like Casa Batllo, the Sagrada Familia, the Aquarium, the Catalunian National museum of Arts, park Guel, the Gothic quarter and many more.
The area is safer and cleaner than many others in the city.
There are many cafes, bars and restaurants in the neighbourhood and a supermarket just across the street.
The apartment itself was very clean. It is old, designed in art nuvo, with beautifuly painted ceilings and many beautiful small details. It has a very long corridor (I did not measure it, but it is like 15 meters long), which is the only negative thing I see about the appartment - you need to take rest on your way from the kitchen to the living room, where the dining table is. :) On the bright side, this gives you excellent privacy, as the other bedrooms are miles away.
The kitchen has everything that you would need - a fridge, a cooker with an oven, a microwave, a washing machine, a dishwashing machine, a toaster, a passator... you name it! There are two bathrooms, three bedrooms, a separate room with additional wardrobes... There is a small balkony looking over the street where I used to have a smoke in the mornings while staring at the people walking down the street...
The host, Mar, is very friendly, communicative and she was very flexible when we needed to check out later than usual.
Overall, I highly recommnend this place and the host.