To put a slightly different spin on it:

#Don't Hide It

It sounds like you intend the story to be at least a little bit humorous, so in that case it's a perfectly legitimate literary device to have him incredibly obvious, yet no-one except [character] can see it.

For example, the first time he meets neighbours Jim and Steve the conversation might go like this:

Jim: "Nice to meet you, I'm Jim."

Dracula (in thick transylvanian accent): "And I am Dr. Akula. Who is a normal human and not a vampire at all."

Steve: "He's a vampire! Look at his fangs!"

Dracula: "It is very rude to point at vampires. And people. Because I am not a vampire."

Steve: "For gods sake man, he's wearing a bloody opera cloak! How can you not see this?"

Jim: "Don't be ridiculous, of course he's not a vampire. He said so himself, and I'm sure he would know if he was a vampire."

Ah, here's the tropes page: Only Sane Man. Also see Devil in Plain Sight

To put a slightly different spin on it:

Don't Hide It

It sounds like you intend the story to be at least a little bit humorous, so in that case it's a perfectly legitimate literary device to have him incredibly obvious, yet no-one except [character] can see it.

For example, the first time he meets neighbours Jim and Steve the conversation might go like this:

Jim: "Nice to meet you, I'm Jim."

Dracula (in thick transylvanian accent): "And I am Dr. Akula. Who is a normal human and not a vampire at all."

Steve: "He's a vampire! Look at his fangs!"

Dracula: "It is very rude to point at vampires. And people. Because I am not a vampire."

Steve: "For gods sake man, he's wearing a bloody opera cloak! How can you not see this?"

Jim: "Don't be ridiculous, of course he's not a vampire. He said so himself, and I'm sure he would know if he was a vampire."

Ah, here's the tropes page: Only Sane Man. Also see Devil in Plain Sight