Mae'n braf (pronounced "my-n brahv")
Here's a breakdown:
* Mae - It is (verb "to be")
* 'n - A contraction of "yn" (in)
* braf - Nice
Here are some other options, depending on the context:
* Mae'n hyfryd (pronounced "my-n hif-rid") - It's lovely
* Mae'n dda (pronounced "my-n da") - It's good
* Mae'n hardd (pronounced "my-n hard") - It's beautiful
You can also use these phrases to express different degrees of niceness:
* Mae'n eithriadol o braf (pronounced "my-n ay-thri-ad-ol o brahv") - It's exceptionally nice
* Mae'n braf iawn (pronounced "my-n brahv ee-awn") - It's very nice
* Mae'n braf rhywbeth (pronounced "my-n brahv riw-beth") - It's somewhat nice
Remember that Welsh grammar differs from English grammar, so the placement of words can change the meaning. For example, "It's nice to see you" would be translated as "Mae'n braf gweld ti."