I'm pretty easy going on dates and find it's more about the person you're with than anything else. For a first date though I would prefer the first place to be somewhere with a table between me and the person. Too many first date drinks where the guy has sat next to me, tried to get me drunk and proceeds to start feeling me up, so dinner or coffee is usually a pretty good start.
The places that I would pick as the worst places to go on dates:
1. Anywhere that seems unhygienic or dingy. You don't want to feel forced into eating somewhere you would never normally touch.
2. Somewhere that the person is friends with the people working there, can not only make you feel pressured but it's also a bit awkward and puts unnecessary pressure on you (besides being a bit creepy).
3. A completely empty restaurant! Some restaurants can pull this off without feeling weird, or it might just be lunchtime, but again it can make you feel nervous if someone chooses a restaurant that no one else seems to go to. (Same goes for too busy, if it's really hectic and loud it can stop you from getting to know someone.)
4. Somewhere that sells only one type of food. For example I had a sugar daddy a few years ago who always took me to restaurants that sold really unhealthy food with no healthy options. I was having hormonal problems so just one unhealthy meal would make me put on a pound or two and it used to do my head in as it wasn't where I would have picked to have a cheat meal. I understood that he didn't care about being overweight, but I definitely did, and he probably didn't want me to be overweight either. Same goes for taking someone to a restaurant that only sells sushi or something similar without asking them if they like it.
5. Anywhere to get take out food like mcdonalds or burger king, unless you both agree beforehand that you're going to get that type of food. Firstly the unhealthy thing, and secondly, it's loud and pretty grubby if you stick around, or you choose to leave and wonder around aimlessly.
6. Following on from the last one, wondering around aimlessly on a first date not knowing where to eat or not choosing a place to eat beforehand. Deciding on what to eat or where to go can be a tricky subject even for long term couples, so on first dates when you're trying to get to know one another it's a bit awkward to also make the decision of which restaurant to go to. In my opinion whoever asks the person out should have ideas in mind of where to go, it's fine to have a few places in mind and check with the other person, but not having any idea and not wanting to make a decision doesn't make you come across positively.