Marcos was a great host!
We loved the apartment, it had everything we needed and more (there was a bottle of wine, a Nespresso coffee machine with capsules and a fruit bowl). The location was great, we generally got taxis everywhere but it was only ever a 5-10 drive and the taxis are very reasonable (6-10euro).
When we arrived Marcos was waiting outside the apartment so it was easy to find!
He also recommended some places for me and my two friends to go and rang to help book us a table. Really kind of him!
I would definitely stay at Marco's place again next time we go back to the wonderful city of Barcelona!