Complex sentence: During this time it was noted that there were some ways in which the site's facilities might be improved, for example none of the stages were adequately soundproofed and the ceilings had a tendency to leak during rainy weather.
Split into simpler sentences: During this time it was noted that there were some ways in which the site's facilities might be improved. None of the stages were adequately soundproofed and the ceilings had a tendency to leak during rainy weather.