"even enjoyable" is correct and usable in written English.
It is used to emphasize that something is particularly enjoyable. For example, "The movie was even more enjoyable than I expected."
They're always friendly with me, decent, even enjoyable company.
Not that it's comfortable or even enjoyable, but it's a more human way of seeing people".
They make music that is clearly meaningful for children yet tolerable, even enjoyable, for parents.
Killer hops, killer fruit, overwhelming yet bearable, even enjoyable, because it is so well balanced.
Michael Caine, however, makes the movie worth watching, even enjoyable, in a grim sort of way.
Its buoyancy may not redeem its predictability, but it makes the movie bearable and even enjoyable at times.
Even enjoyable hours whiled away with an e-reader or a tablet may have that effect — and worse.
With an experienced and engaging appraiser, most doctors will find that appraisals can be enlightening and even enjoyable.
Here, she shares her strategies for making car rides and flights tolerable, even enjoyable, for you and them.
In many ways, Ms. Harron's movie may prove palatable, even enjoyable, to people who hated or couldn't read the book.
