Apartment was clean and nice, big enough and similar to as expected. Location is near metro station and it is 15-20 min walk to Sagrada Familia. Street is quiet, but in bedrooms you can hear bathrooms (?) of neighbors very well.
Communication was easy enough, check-in was in person. We were unhappy that information about need of paying tourist tax wasn't in general info of apartment, but under check-in information which can be easily missed in this way. And hosts said that we should pay in cash and it is 4,40 EUR per person per night (internet says something different - that it is 3,5 EUR for 5-star hotel (or cheaper) : https://costabravatouristguide.com/152-catalonia-tourist-tax-fees and https://www.barcelonayellow.com/barcelona-faq/1042-what-is-barcelona-tourist-tax-and-how-much-is-it). In check-in we asked about it but girl said that maybe it is old information... In the end we paid not in cash but through Redsys system and then it was approximately 3,25 EUR per person per night.