We stayed in Ivan's place for 2.5 months with a family of 5 including three little kids. Overall the place is amazing and we would definitely stay here again.
The Good - the design, layout, tall ceilings, and light are amazing. it's central to the gothic district with the subway a 3 minute walk and the barcelona bay a 10 minute walk. wifi is fast. ivan is a great communicator and would fix anything that was broken. the people who live in the building were very nice, especially to our kids.
The Ok - the kitchen has basic cooking utensils. the beds are ok, not amazing. and there is only one main walk in closet for three bedrooms.
To Know - the place is located right in the gothic district so high tourist zone. the good news is the corner the place is located in doesn't get a ton of traffic so it's quite at night after about 9pm. the front bedroom doesn't have a closet so all of the bedrooms share one, large walk in closet.
We have stayed in a lot of Airbnb places and this was one of the best.