Incorrect English is not acceptable. Please read the following and learn how to communicate correctly. When you speak like a cretin you are perceived as a cretin.

Real is an adjective. It modifies only nouns or pronouns.

Really is an adverb. It modifies verbs, adjectives, or other adverbs.

Correct: He stayed at hotels with real class.
(Class is a noun. The adjective modifies it.)

Incorrect: He stayed at a real classy hotel.
(Classy is an adjective. It should be modified by an adverb.)

Correct: He stayed at a really classy hotel.
(The adjective classy is modified by the adverb.)