in the context of location and value it's hard to beat Pilar's place. it's really only suitable for one person though. And if you're a very light sleeper who sleeps late this probably won't work for you as there is noise fairly early in the morning. Perhaps earplugs? For me it was fine and I found Pilar to be a very lovely and communicative person.
The location is very good. There is a mercado (marketplace) directly across the street that has a mix of small food and drinks vendors that I recommend be checked out. I would definitely stay at Pilar's again!