Sam's flat is brilliant for a large group, it was very easy to check in and Sam was very accommodating with our needs.
It's not too far a walk from the northern side of La Rambla, it's a 40 minute walk from the beach which wasn't too far for us but if you did decide to take a taxi it will be fairly cheap.
There are lovely restaurants that are quite local too, and there are plenty of shops nearby for all your needs.
All in all it's a nice apartment and we had a great time staying there.