The apartment is very easy to access: just 5 mins walking from the metro station, and with the metro most main attractions are only 10 mins away.
We had a great time in Barcelona, and were able to rest quite nicely in the apartment although the building, being rather old, can get a bit noisy; but as said before, we had no issues to sleep at all.
It was very nice to see that the bathroom is also equipped with hair dryer and all basic toiletries; Its access is through the bedroom and even though we were 3 people, we had no issues with that.
Another nice touch is that the closet also has all the space needed to arrange your clothes during your stay instead of having a mess in your bag.
The hosts were always reachable and provided us the information on how to reach the apartment even 2 weeks before our arrival :) (Thanks again!)