If you love romances, but your primary pet peeve is female characters who are doormats, you may enjoy it. If you love romances, but your primary pet peeve is men who are disinterested in relationships, you may like it. If you like romances with a hint of eroticism, but nothing anatomically explicit or kinky, you may like it.
I, personally, did not like it. My wife did not either.
The writing itself was well done, although it could use a proofread, as there were a fair amount of little errors, relationship not a relationship, or relationships, etc. and superfluous words that were obviously little leftovers from editing. There weren't enough of these to really slow me down, though, and it was, for the most part, really well written and presented. It's engagingly written, and a little humorous, though I found very few parts laugh-out-loud funny. As you'll see, though, I think my overall ambivalence to the characters meant I wasn't as receptive to the humor as you may be.
My wife read probably a third of it over my shoulder, in chunks, but didn't read the full thing, because every time she tried reading it with me, she'd end up storming into the next room and growling for a half hour. She felt that all of the characters were selfish, or abrasive, and it was painful to read Martin's mullings on singledom. I can see the seed of truth to his frustration at rejection, but those parts did feel overlong, and I could see why she thought that those sections were needlessly hostile to women. She also felt that Frances' character was too controlling, and the communication she demanded was one-sided, and that there was nothing to balance that hypocrisy.
I think she was personally offended, too, because she felt that so much of the writing perspective had an anti-woman bent, not just a "rejected single guy" slant. She said "I can see why Martin's single, if he truly thinks he's entitled to polite attention from every woman he hits on, regardless of how intrusive he's being, and looks down on the women who ARE willing to be with him as being stupid, eager to cheat on him with the next man they see, or being too demanding because they *gasp* dared to make their needs known in the relationship, when he was too cowardly or uncommitted to put his own forth! It's insulting to develop your female lead character based exclusively by putting down other women, to build her up.'Unlike OTHER women, she's doesn't abandon the guy she's with at parties. Unlike OTHER women, she's sexually open. Unlike OTHER women, I can have a good conversation with her. Unlike OTHER women, she's one of the guys!' " I, uh, got much more of an earful than that, that I won't repeat here. There were obscenities, philosophical discussions of feminism, and personal anecdotes about the street harassment and violence that women deal with, that springs from that same sense of entitlement to a woman's attention. I live with a forceful one.
Her misgivings aside, I didn't really care for the characters, either. Martin's perspective was just too keenly targeted towards talking about love-drama, and he never really felt dimensional. He seemed to have a bit of a victim complex I found unpleasant to read, even he was with other guys. None of his friendships or history seemed well developed, and I found myself tuning out his thoughts on his hobbies, because they always, inevitably tied back into his current relationship (or lack of relationship) drama.
Frances, despite her well developed background, just felt one sided, vacillating between being demanding, controlling, and restrictive, while demanding painful honesty, openness, and obedience from her partner. Not someone you want to spend time around, no matter how attractive they are, or how bad you feel when you learn about the skeletons in their closet. Even attending her mother's party didn't add any real nuance to her treatment of others. In the narrative, Martin focused on his own awkwardness in her social circle, without any mention of her telling family stories, introducing him to non-comedic family, or showing any real vulnerability or individuality of hers.
I didn't understand why it ended the way it did. It felt like neither of them actually grew through the story, and I had the sense that immediately after the close, they were going to go back into the same unhealthy patterns that had shaped the conflicts in the story in the first place. The ending was anticlimactic, because they never actually confronted the issue at the climax. It wasn't a satisfying ending, although it supposedly ended on a happy note.
Only thing to say, really. Read the sample. If you like following Martin's perspective, you'll probably enjoy the full thing. If you dislike him from the beginning, like my wife did, then you'll probably dislike the full book. There's a lot of fun humorous elements, and it's decently well written, but if you don't like the characters in a romantic comedy, you won't have any reason to root for them to reach their happily-ever-after.