The apartment is located on the third floor but no need to worry if you have heavy luggage as there is an elevator. The house is very clean.
Leo is a wonderful host - he is very kind and will help you with any questions you have abut Barcelona! Every morning he leaves you a baked good and your choice of coffee or tea.
If you are someone who loves natural light just be aware the bedroom doesn't have a window (but it has a strong light), there is also not a functioning kitchen if you like to cook meals while away. Apart from that it is in a wonderful spot (lots of cafes around, close to trains/buses, not far to walk to Las Ramblas etc).