We spent a week in January in Rosa's and Nicolas' apartment as a party of five (two adults, three small kids) and had a very pleasant stay there. Our hosts welcomed us warmly, provided us with a map and shared some of their favorite spots in Barcelona with us. The apartment was spotless clean, very comfortable, tastefully furnished and offered all kinds of amenities (e.g. a small safe, darkening curtains, washing machine/dryer, dishwasher, coffee maker, huge fridge and freezer, lockable balcony doors, centrally adjustable heating, stable wifi etc). In advance, we asked for a highchair and travel cot for our toddler and both were like new and served us well. There's just one thing that I didn't like too much (but I'm a light sleeper, I admit): The house is a bit noisy. Some of the neighbors had a party, others started to drill wood in the middle of the night, a dog was barking nonstop... it was rarely quiet at night). Also, you can't sleep too well with the windows open as you hear some traffic noise (you won't hear anything when the windows are closed). All in all: highly recommended!