Learn French: Ils viennent d'ouvrir un nouveau spa dans ce bel espace. - They have just opened a new spa in this beautiful space.

Beau is the standard masculine singular adjective, but we must use its special form bel when the following noun starts with a vowel or a mute H. Since espace starts with a vowel, we use bel to make pronunciation smoother.

Since we just learned about mutated adjectives, why is it nouveau spa and not nouvel spa?

The mutated form nouvel is only used when the masculine singular noun begins with a vowel or mute H (like un nouvel hôtel). Because spa starts with a consonant, we use the standard masculine form nouveau.

Doesn't venir mean to come? Why does the translation say have just opened?

When you use venir de followed directly by an infinitive verb like ouvrir, it forms the recent past. It means someone has just done that action. So ils viennent d'ouvrir translates to they have just opened.

I thought nouns ending in -ace were usually feminine. Why are we using masculine words like ce and bel for espace?