You can expect an overpriced 2/5 experience.
Unless you're last minute and this is your last resort, me and my wife would recommend something else in Barcelona. The pictures look great but it's a different feel in an old rough building, no elevator to get your bags up, things fell apart in the bathroom, light in bedroom didn't work, kitchen was unequipped unless you only want to boil water - could be nice with some cooking basics and coffee that we bought for the next guests. The host was a bit late for the check-in which can happen and only wanted to speak Spanish which made it hard to understand for us. Overall this stay was not a nightmare, but compared to our previous 2 stays in Barcelona this was the worst in terms of host contact, standard and by far most expensive of all our stays. We paid 110€ p night and would say it was a 70€ p night experience.