Location, location, location! 1 block from the best beach, nice waterfront restaraunts, and the locals favorite. Right on Rambla Poblenou, another local favorite. A pedestrian street with great food (try El 58) and supermarkets. It feels very safe and is very relaxed.
The apartment is quiet, well stocked, and has darkening shades to making sleeping peaceful at anytime of day or night.
It is a secure building and we always felt safe and at home.
Enjoy Barcelona and know that transit is great throughout the city. Taxis are plentiful and reasonably priced.