Vampire Holmes has been a strange beast since day 1. After the raw untranslated version was released, no major subbing groups heeded the call.
However, Last-Subs did.
Last-Subs, a mysterious and intriguing group, published their subs on nyaa when nobody else did. Not as a video release, with the subs placed over the already-existing raws, but just as a .ass file. If you wanted to watch with their subs, you had to do it yourself, downloading a raw and then adding the .ass file in afterwards.
And boy, was it worth it!
Last-Subs may very well have been made by putting the script into Google Translate. It's that level of terrible, so bad that it's amazing. The first 2 episodes alone contain such great lines as:
"The only people who use the floor as a bed are the losers."
"Ate recently, in addition has to work because we are bankrupt."
"This very seriously."
"Damn, my face is fused to the bedroom floor."
The actual show itself is terribly uninteresting and low-quality, but Last-Subs made it totally worth watching. I was laughing my ass off for those glorious 2 minutes and then looked forwards to next week's release. I'd rate those episodes as 10s.
But after episode 3, Last-Subs went strangely silent. There were no more fansubbing groups for the show. I practically gave up. Then I learned that viewster hosts the show's official release. With actual coherent subs, the show lost all of its joy and meaning. I held off, then watched episodes 4-12 in one day (The whole series only takes 24 minutes). It was a pretty miserable experience, and the "Vampire" part of "Vampire Holmes" was entirely nonexistent. I'd rate those episodes as 1.
Taking all of this into account, I found the average score of the show through its individual episodes. 10+10+10+1+1+1+1+1+1+1+1+1 / 12 = 3.25, rounded down to 3.
In conclusion, definitely watch the Last-Subs versions of the early episodes, and you can safely ignore the rest.
