Reviews bed and breakfast in great hall in Greece directly over a number of religious buildings (6)
I believe the answer is:
abbots
'reviews bed and breakfast in great hall in greece directly over a number' is the definition.
I can't judge whether this definition defines the answer.
'religious buildings' is the wordplay.
'religious' becomes 'abbot' (abbot is a kind of religious).
'buildings' becomes 's' (I can't justify this - if you can you should give a lot more credence to this answer).
'abbot'+'s'='ABBOTS'
'of' is the link.
Can you help me to learn more?
(Other definitions for abbots that I've seen before include "Religious community heads" , "They're in charge of monks" , "Heads of orders of monks" , "Religious sorts" , "Leaders of groups of monks" .)