Hotel Donnersberg in Darmstadt

Overall an experience I would forget. If it weren't well connected to the place I had to go work at, this would've not been worth it.

If you're planning on working/partying over night and sleeping in you can forget it. Whoever does the cleaning leaves the doors of the rooms they're cleaning open, so you can hear the loud vacuum starting as early as 9 in the morning, and you're only sleeping through that noise if you're beyond unbelievably tired... I was and I still couldn't sleep. As a deep sleeper, that was shocking for me to say the least.
Also a note on the pillow: definitely too thin even for a back sleeper. I'm a side sleeper and I had to use the second one in the room and fold them in half. Was barely enough to raise my head, otherwise it's as if sleeping on the mattress

There is basically no leeway when it comes to late check-out or late breakfast (don't know about early). I can understand no late check-out unless agreed upon early on, but you can't even ask for like 30 minutes extra.
Late breakfast I understand, but I was a little bit disappointed that they didn't even offer to prepare a sandwich or something in a bag or whatever, since we did pay for the breakfast but we communicated that we wouldn't be taking it (although I did get woken up in time for breakfast, I was too tired to get up)

But what hurt me probably the most was that I had forgotten something in the room in the rush of leaving. I had realized and came back less than an hour later to learn that my stuff was thrown away already. Not keeping stuff your guests forget: ok
Not even putting it aside for like 12 hours... Kinda bad imo. People will often forget things and remember during that same day and will most likely come back to recover whatever they had forgotten. It costs you nothing to keep something around for a couple of hours, but can make a world of difference for someone who has forgotten something in the room.

The hosts were friendly and ok and they did help me when they could, but it was always upon my request and not their initiative. That's what distinguishes you, going that extra distance of your own accord to give your guests that little extra they didn't expect that would put a smile on their face.

I don't like to nor want to be mean, nor was it like a horrible and unbearable experience, but there's much more to work before this place can work as a proper business hotel.

On another negative note: wifi in my room was at best inconsistent, at worst unusable. The speed is not the issue here, but the router/extender is placed in a suboptimal place wrt the room. You also get only 2 devices you can connect to the wifi and that's it for the rest of your stay. Not 2 at a time, 2 total. I hope the check for the device is done based on MAC address otherwise some situations might lead to you not being able to use the wifi at all overall.

Breakfast is within standard and well worth the price. Nothing to phone home about, but you also won't leave hungry or feel that you missed something.

The lady of the hotel was very kind and helpful. I had a large room with a small kitchenette, which was nice.