Host does not share location until very last minute, which is frustrating (Airbnb advises 4 days in advance), and communication through Airbnb is slow (try WA instead). Location is great for Casa Battlo and Casa Mila, but would advise public transport/taxi for the rest. Safe and quiet neighbourhood. The building was clean-ish, the flat very clean.
We were allowed earlier into the flat (thank you), but make sure you know in advance the tourist tax you need to pay (children under 16 do not pay and they tried to charge us!). Access is electronically (no key-so no use if you do not have a mobile with you), very easy if you do have a mobile. Provision of sheets, towels, shampoo etc for a couple of days, making life a bit easier. The stove needs looking at (couldn’t cook high heat on three plates at the same time-error turned everything off), and sofa was a bit tatty.
That said: balcony-loved it, aircon-unmissable, beds-very comfortable, kitchen and bathroom-modern and totally adequate and the flat has so much space!
In a nutshell: we would definitely stay here again if we were to return.