I am thinking to use some of the points this way:
SPG London - 40,000 gets me 5th night free - that takes care of london
HI Bath - 20,000 takes care of Bath
IC Berlin - pay 1 night, use b1g1 cert for 2nd night, use points for other 4 nights @24k per - takes care of berlin
now i need munich, venice and zurich