This place is AMAZING. First of all, the location! You are staying right inside a very old building with a medieval-looking door and stone walls. The place is steps from the most famous sites of Girona (e.g. the huge cathedral and Arab Baths). Really, when most places say "steps from" it means a short walk; here, I really do mean a few short steps. The Arab Baths is next door.
Second, Rosa provides an exceptional breakfast. There is a sitting room / common area downstairs, which she keeps stocked with a few drinks in the fridge and bread/fruit all day long. In the morning, we ate a hearty and delicious breakfast with yogurt and granola, bread with cheese and meats, and fruit juice. It was tasty and made the overall stay such a great value, since it saved us a meal eaten out.
Finally, the space itself is cozy but very comfortable! We loved it.
One note to light sleepers: because Rosa's place is truly in the heart of the old area, it is right near a restaurant/concert venue that had live music late into the night. So if you need to sleep with silence, this might not be the best fit for you.