Berth adjectives are listed in this post. Each word below can often be found in front of the noun berth in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing BERTH.
best, better, comfortable, easy
good, last, little, lower
narrow, new, next, old
own, safe, snug, top
upper, warm, wide, wider
Hope this word list had the adjective used with berth you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.