We initially chose this for the location (as it's near Rambla Catalunya and our old flat in Barcelona) and for the price, especially when compared with other flats for rent in the L'Eixample area. The other plus points are:

1) the host--who graciously fetched our colleague when he got lost trying to find the flat (it is easy to find, but he got mixed up with the floor/room number and flat address).
2) clean, well-decorated flat and fully equipped kitchen.
3) the nice touches--chocolates on the bed side table!
4) its proximity to the metro stations (Passeig de Gracia stop and Universitat) and the bus stops to/from airport (Plaza Catalunya stop and Plaza Universitat stop).
5) Grocery store around the corner that's open 24/7 and pharmacy a few paces from the flat.

Highly recommended and will come back again! Thanks, Jepis!