This is a lovely apartment with a great little sun trap of a roof terrace. We had a really relaxing stay especially as it was rather quiet.
David was a very communicative host who wanted to ensure we had a easy and relaxing time.
Yes there are several steps to the top (it's a penthouse after all) but this wasn't a problem for us. Similarly you might not like the mezzanine sleeping area but personally we liked it.
There is a great little bakery and butchers near the flat, as well as a little place serving craft beer. Otherwise there's not too much immediately close by but a 10 to 15 minutes walk into the Gracia - towards Plaza Del Sol - you'll find some great bars, restaurants and coffee shops. It's also handily close to the Sagrada Familia which is well worth a visit and close to a Metro that will take you to most spots you'll need.
This felt like a decent value find in contrast to the cost and price of the rest of Barcelona.