When I arrived in Urfa I had a bit of trouble adjusting, as few people spoke English and the town was difficult to navigate. I'm sceptical of Arte's claims to "bilingual staff" as I had trouble convincing reception that I'd already made a booking and paid a booking fee. Similarly, claims to "24-hour check-in" did not stand up as I had to wait an hour once I'd arrived.
That said, once I'd got my bearings, Arte was very comfortable and I ended up staying another two days. It is, as others have stated, centrally located and has a bus stop just outside that runs to Balikli Gol, the main tourist attraction in town. The hotel seems to be about the best value for money you'll find around town, but this being Eastern Turkey it's still quite expensive.