I stayed in this hotel in october 2006, so I don't know if things have changed since then.
Anyway, Diogo Hotel was above average in the area. The rooms were clean, staff was very polite and friendly and I had no problem at all. The swmming pool was nice, but the sun wasn't there because of the building' shadow. One of the things I liked the most was breakfast, the "tapioca" was gorgeous!!! You have to try, if you haven't yet. Across the street there is a Habib's where you can eat and don't spend much money. Also, there is plenty of banks and other restaurants near the hotel. In october 2006 there was no internet access in the rooms, but there was a lan house a few blocks from it.

The bad thing, not only for Diogo Hotel, but for anything nearby is the violence of Fortaleza in that region. Be aware when you walk around the streets!