Overall the property is quite good - but there are a few things that diamond hotel needs to fix in order for me to stay again. The staff is nice and decent breakfast and genuinely try to be helpful and nice. The internet is painfully slow, I can barely load a standard website. At night, there is a club below by Diamond that blasts music from 4pm until 2am. You can hear this even on the 6th floor of the hotel. I occasionally find some small bugs in my room, but overall the room is clean and tidy. It needs more plugs though, there's only 2 in the whole room, and none by the desk.
The three biggest thing for me are 1) that I chose the hotel for the gym it offered, but when i got there, it wasn't ready. please do not falsely advertise a gym. the manager defended that it was "being built". that's okay, don't advertise that you have one then. 2) the washroom has this sewage odor that wouldn't go away no matter what. it made the room smell quite unpleasant. 3) also the wifi is one of the slowest I've experienced in addis. i can barely load a website