I personally highly recommend SeaBed. It is hands down my favorite visual novel, with or without the yuri. It is difficult to tell who is talking, but trust me when I say you'll get used to it. It is really slow in the beginning, so it's not for everyone, but it adds so much feeling and impact. Trust me. SeaBed is a narrative game and is carried by the characters, so if you're unable to develop a connection to them, you won't be get that much enjoyment from it. Therefore, if you can't sit through 4-6 hours of slow build up, you most likely will not get the full experience.
Otherwise, it seriously takes off from the prologue. It's a psychological story with lots of foreshadowing and little hints spread everywhere. The characters are lovable, and again, they absolutely carry the story.
I'm in love with the story's writing style. The characters make note of every little detail, but not everything has to do with the story. Just like how you might notice the sound of a bird chirping at daybreak, or you may notice the voices of people in a packed train station. There is a reason for it, but no spoilers.
The characters are all adults (late 20s - early 30s, so don't expect explosive, cheap drama plot devices anywhere, haha...
I haven't stopped thinking about SeaBed since I finished it a month ago. I binge read it, and re-read it already. It's well worth its price.
Well damn, you've sold me and I'll be picking it up. One thing that did strike me from my short time with the game was how... clinical the writing was, in the sense that there's a lot of descriptive prose about seemingly everything except the characters' internal thoughts and feelings. It immediately reminded me of the style of English contemporary short stories and I was wondering whether this was done intentionally. Great to know this is the case, thank you.