I read 2 Hartas but haven’t made any notes while I read them, so I’ll just collect some short thoughts for each here. (Hopefully I don’t confuse any of the chapters between the volumes!)
Harta 78
debuts
アビスアジュールの罪人
Very pretty and a very cute setting. Glad to see another debut that grabs my interest and will probably be a staple for me.
ホテルメッツァペウラへようこそ
I love Finland so of course I’m down with this. Seems like this is set in Lapland which is super interesting and makes the setting even more rare.
one-shots
後ろのギャルにナプキンとられた
Every time I feel like something is iffy I check what others said about it and reading rodans and mitracs comments about that one made me finish reading it. I still feel a little bit meh about it, but it was definitely better than I expected from the first read. I don’t know anything about the author, but depending on who they are and what their feelings on the story are I could really like it.
I often need to get a bit of a read of an author to enjoy a work fully (has been the same with 村田 沙耶香 (Murata Sayaka) btw, she’s now my favorite author but I wasn’t convinced until I saw some interviews with her. Coincidentally, this Manga, for me, creates similar feelings like a Murata book).
ねえさん、起きて
The twists in this one didn’t really land for me. The art was really pretty, tho!
continuing
夜の名前を呼んで
I am not sure if I would call this one my favourite series currently but it is definitely one that I always read the quickest and am surprised the chapter is already over 
In this harta, this got the sending half hearted translations to my husband treatment 
北北西に曇と往け
Forever waiting on a sale on the remaining manga volumes on bookwalker because this is the other Manga in Harta that always go extremely fast for me and am always looking forward to. I love the art so much I can even see myself maybe collecting this as physical volumes…
ライカの星
夕凪に舞え、僕のリボン
Awww, I’m sad that this one is over. On the upside, it’s currently on sale over at Bookwalker so I got the 2 volumes and will read that one from the beginning when I have time!
Harta 79
debuts
ことり文書
Very enjoyable! It’s not groundbreaking, but it was a nicely contained first chapter.
one-shots
なっちゃんはテンションで水深が変わる
Not much to say, but I actually really enjoyed it. Would love to read more in this setting. Always love some stories set in the real word with some surreal elements.
アリスの小さな夢のあと
This didn’t land for me and I kind of rushed through it.
continuing
生き残った６人によると
I am kind of losing interest in this and the chapters feel a bit dragging. I don’t really know why. I often take breaks while reading this, which means it’s not really grabbing me as much. Or maybe it’s too text dense? Normally I think I would drop it, but I really love the characters and find it a very unique title in Harta, so I can’t really let go yet.
夜の名前を呼んで
Very cute and touching chapter. Not only is the art style amazing, the paneling is also so beautiful, I am in awe with every new chapter.
真柴姉弟は顔が固い
Good fun as always! So far, one of the weaker chapters (imho) as the setup was pretty basic.
アンリの靴
北北西に曇と往け
Finally got the other volumes and can catch up on this! Will probably gather my thoughts in my next few Harta posts.
ライカの星
Please share here if you ever do that!! 
100% same, down to ordering the book (which already arrived, I still need to read the other short stories in there…)
手つかずの国
Not as enjoyable as the last couple of chapters in this series, but it was still alright.