I recommend staying at Marta and Paul's place. It was perfect for our family of four (two kids under 14). I thought that it would have been better to stay in the older parts of town but having walked around a lot in Barcelona we realize that this is the best location. It is super convenient for everything. Everything you want is just outside the door, literally. If you want to take in the sights then you are within minutes of several places. If your plan is to do some serious shopping your choices are endless. Often when we went shopping we dropped bags off at the apartment because it was so convenient. If you want to eat then there are several places within minutes and most of them were good. There is a taxi stand across the street and hailing a taxi at any time of day was easy. Banks at the corner! The apartment is well appointed and comfortable. When I first read the reviews of this place I thought maybe they were overly positive but I was wrong. This place was great and dealing with Marta and Paul (and Stephane) was very convenient. Barcelona is a wonderful city and this place took so much of the usual travel and vacation stress away.