Verified answer

Here's the deal:

感じ is used for both people and things

Ｘさんって、感じのいい人ですね。 X seems like a nice person, doesn't s/he?

その部屋、いい感じね～ The room looks fabulous!

（Ｘが）そんなふうに言うなんて、感じ悪いよね (that sounds bad ≠ Ｘ's bad)

気持ち is connected to someone's heart

（なにか説明をした後に）これが、ぼくの正直な気持ちです

That's what I think/ That's how I feel/ That's my honest opinion

（Ｘとしては）気持ちよくないですね

I don't feel OK about that. X might not feel comfortable with that.

（プレゼントをあげるときに）これは私の気持ちです

I'd just like to show my appreciation./ It's my little way of saying thanks.

※ Ｘ は人です

※ 気持ち is what you feel and describes how you feel.

One has a few more lines then a 5

well my rikaikun app for chrome says:

感じ - feeling, sense, impression (sour, salty, smooth...)

*感じる (v1) means to feel, to sense, to experience

気持ち feeling, sensation, mood (happy, sad, excited...)

I am not so advanced yet, so I can only help you with this.

気持ち is feeling, happy, unhappy, fun, angry, sad, etc.

感じ is more like sense, like 5 senses.

a sense of sight

a sense of hearing

a sense of smell

a sense of touch

a sense of taste

いい感じ It looks good. It looks promising.

いい気持ち　 I feel good.

「いい感じですね」　　Looks like you're doing pretty good.

「ま、そんな感じです」　　Yeah, pretty much.