Concha is a great host who was very helpful and accommodating. Everything we needed was provided. Location is very all the must see hot spots. It's also very close to the Plaça Catalunya bus and metro stations. There was also many super markets near by if you need to pick anything up.
My only issue is that at night time, it can get pretty loud outside with either people yelling or loud music. We got awoken a few times due to this. I'd suggest bringing ear plugs if necessary.