TFW you’re writing about a book, and the best description you can come up with is: perfectly adequate. The Sherlockian was perfectly adequate. There are two mysteries, one solved by a fictional Sir Arthur Conan Doyle. There’s an eccentric main character. There’s even a romance.
It’s… fine? It’s especially fine considering it’s a first novel, and it’s got some of the oddities that first novels often do. (I like first novels – I’m clearly not a great writer, and it’s heartening as a reader and amateur writer to see even professionals get better with more practice. [You will probably never see any fiction I have written. You don’t want to.])
If you’re into Sherlock Holmes, read it, but it’s not something I’d recommend going out of your way for.