We really enjoyed staying at Luis's apartment in Barcelona !
Location: It is very close to the Barcelona SANTS train station which is how we arrived in Barcelona. We decided to take a cab from the train station because our luggage is large and it just seemed easier than dealing with the metro. However, the apartment is just steps from the metro if that works better for you. The taxi ride from the train station to the apartment cost approx $7 euro. Luis arranged to have a taxi pick us up at the apartment and take us to the airport when we were ready to leave which was a wonderful extra service. He made sure it was a large van because as I mentioned our luggage was quite large. That taxi van to the airport cost around $33 euro and took maybe 10 to 15 minutes to get there.
Tourist stuff around the apartment: There is a full mall in the arena with many places to eat and lots of shopping. We took one of those hop on and hop off buses which were we able to pick up right across the street. We paid online and then showed them our code once we got on the bus. You are also walking distance to the National Art Museum which we saw but did not have time to visit.
Apartment stuff: The apartment does have two lifts which is nice to have in Europe. They are small so a couple trips may be necessary if you have large bags or several people in your party. The wifi worked very well and they do have TV even though we did not use it. The apartment has everything you would need. It does have two bathrooms but only one toliet. The apartment was very clean. My wife thought the beds were a bit soft but I kinda like that so it worked out for me. It also has a washing machine to do some laundry but you will have to hang dry your clothes (they do have an area for this). They have built in blinds which makes the rooms very dark and helped me sleep better however, it is on a busy street and some road noise can be heard.