Although Heathrow has been unkind, we don't really mind - Barcelona is largely closed (museums etc) Mondays anyway. We arrive and find only 1 of 2 bags there. Claim time. Spanish practice. It quickly transpires that a whole luggage trolley has missed the cut, and will arrive next plane. Or thereabouts.
On to Barcelona and our hotel. We buy 4-day Metro/bus tickets (very cheap) and hop a bus to the Plaza Catalunya - a short trip, then brave the Metro system (colour coded and lines are numbered too) to our stop. Everything works fine. We find the hotel without drama - it's in the Barri Gotic - think, 3 m wide streets, 4-6 storey buildings, but clean, lots of foot traffic, feels very safe but definitely exotic. Trev and Jane arrive later on, again without drama. We very much like what we've seen so far.