We are a family of four with two young children, and we stayed in this apartment between April 6th - April 10th, 2014. The apartment is centrally located, about 100m from La Rambla. The Boqueria Market is conveniently located only a few steps away. The nearest subway station on La Rambla is also only 1-2 minutes by foot. Carrefour Supermarket is 5 minute walk down La Rambla. I could hardly think of a better location in the Old City. The building's front door is secured with a lock, and there is only 1 apartment on each floor. There is not much activity in the building, and during our stay we have not seen any suspicious activity or any strange characters. Actually, we have not seen anyone but the manager and the cleaning lady. Overall, we felt very safe. The apartment is very clean, with lots of light fixtures (lamps, recessed lights, ...), and had everything we needed: fully equipped kitchen, washer/dryer, iron, hair dryer, lots of towels, Wi-Fi internet, etc. It is a corner unit facing two very narrow streets, which makes the apartment a bit shady. On the other hand, if you like to have some privacy you would need to keep the curtains closed as otherwise the rooms are pretty much fully exposed to the neighbors across the street. We did not see this as a problem, especially because almost all streets are very narrow and this is something one should expect anywhere in the Old Town. This was really the only 'not-so-positive' thing worth mentioning, and by all means it would not be the reason for not renting this apartment again. Carlos (the Manager) is well organized, very helpful and easy to work with.
Thank you Carlos! If we ever come to visit Barcelona again, we would not look for another apartment.