Welcoming unusual shop with one piece of furniture (10)
I believe the answer is:
hospitable
'welcoming' is the definition.
('hospitable' can be similar in meaning to 'welcoming')
'unusual shop with one piece of furniture' is the wordplay.
'unusual' indicates anagramming the letters.
'with' means one lot of letters go next to another.
'one' becomes 'i' (Roman numeral).
'piece of furniture' becomes 'table' (table is a kind of piece of furniture).
'shop' anagrammed gives 'hosp'.
'hosp'+'i'+'table'='HOSPITABLE'
(Other definitions for hospitable that I've seen before include "Warm" , "Helpful" , "Welcoming to guests" , "kind" , "Friendly, welcoming" .)