Jordi's flat is a lovely spot and Jordi's mom Rosa was so kind to us. This place is ideal for 1 person or 2 (if you're ok with things being a little snug). You will get a wonderful Catalonian experience in this area, though Spanish is easily spoken by everyone my wife and I encountered.
There are excellent market options around, the metro is a 10-minute walk, and the local Vinalium has a lovely couple running it with expert picks on Catalonian wine. You may also want to have lunch at El Cullerot de Sants for a very local Catalonian meal.
If you're a tourist looking to spend most of your time in the Gothic Quarter, you're 30-40 minutes away so keep that in mind. We spent 2 months here while I studied Spanish in Eixample (30 minutes away). A cab ride to or from the center is about 12 euro. The T-Casual metro pass is only 20 euro right now.
There was a bit of work going on in the building, so remote workers will want to check with Jordi to see if things have settled down.