 The location is good if you plan to see the whole Gaudi but if you orient to spend the most of the time in the old city or near the sea this is not the best choice but still a good one 
 a Excellent customer service they are just VERY helpful b Very clean and quite c They serve vegetables for breakfasts together with other tasty things which is a rare case in Spain as I noticed d Close to Diagonal from which you can get anywhere in Barcelona 