Positives:
Great location, in the Gothic quarter but a 1 minute walk to the Ramblas to cross over to El Raval. Plenty of bars, restaurants and supermarkets on your doorstep.
Host was on time, easily contactable and helpful.
Rooms were as expected, simple, clean, comfortable beds/pillows
Plus point - 4 bathrooms with showers, super handy for a large group.
Negatives:
Lift was confusing to use, stairs very narrow. Not an issue for us, but may be for some.
Noise. Apartment is next to a church so the bells go off from early morning every hour. Rest of the apartments above/below aren't well insulated, so it can be a little annoying when you are trying to sleep. But, you are in the Gothic quarter, it's busy etc so should be expected.
No hand wash soap. I know it's an Airbnb and you bring your own stuff - but that I think is needed.
Overall - great location, does what it says on the tin.