Nuria's home is well laid out for a shared space... the bedroom is on the upper floor, that includes a mini fridge and kettle, and a great sized table to enjoy your breakfast at 'home'. I found there to be decent separation to not feel you are in one another's area. The bathroom is shared but was never an issue... and is quite spacious and clean (recently renovated). No bath but the shower is fantastic!
I've never been to Barcelona before... but I'd definitely return to Nuria's and/or the neighbourhood, Gracia, (if looking for a larger space)... as I found the area to have all the amenities you want / need... was close to everything but far enough removed from the tourist areas at day end.