Umberto's apartment is absolutely lovely. Very well designed with great care, perfect for a single traveler or a couple. Loved the bedroom, the lighting everywhere. It's small but very cosy. Umberto was very communicative and helped on a number of front, he was only a chat away when I needed something and regularly checked in to make sure things were okay. The flat is 500 meters from the old town section and near a street with several services. He also left me with some restaurant recommendations which were excellent.
On visiting Ostuni in the beginning of March: I must say that was a bit harsh, especially that this year's spring is quite cold and rainy in the region. So I did not get to enjoy the cute terrasse as much as I would have wanted, and found that services were mostly closed, so that was a challenge but has nothing to do with this apartment. I would absolutely come back in a slightly warmer season where things are open again!