Just a point I've noticed Sammac - you say there will be 30 kids divided between 5 nursery nurses - legally the staff ratio for 2-3yos is 1:4, so technically they are exceeding that - or will they have 1 nursery nurse and another extra member of staff? - just something to consider...
Main points for me when I was choosing a nursery -
personal recommendation
"gut" feel for the place - this was hugely important for me, DD1 and I went to another nursery to have a look - she screamed the place down whilst we were there (totally out of character!) and I had a "unnerved" feeling. Also woman wanted £40 there and then as a deposit - even though I hadn't decided and I had others lined up to look at.
If they were happy for me to turn up announced
How happy the children were - how they dealt with those crying etc
The nursery I chose over 5 others in the area:
has the owner as manager who also works in the "3-5s" room - impressed that she is very hands-on.
VERY low staff turnover
has an excellent reputation in the community amongst other professionals, ie GPs/HVs/Social Services etc
My DD1 started this nursery in Jan. 1998 when she was 2 1/4 - she's now 8.5 and my DS1 has been through the nursery and left in 2002 and DD2 has been there since she was 2 1/4 and leaves in July to start school in September Myself and the children have all been thoroughly impressed with the nursery and I've never had to query/complain about any of the care received.
DD1 and DS1 both have fond memories of nursery and the same staff that were with them are still with DD2 now!