Delft to Leiden

A cool day but blue sky and sunshine!
After a nice breakfast at the hotel we went to the tourist info centre, where we left our bags inside with our bikes locked outside, and had walk around the town centre. At one point we spotted a couple of Van Moof bicycles in the wild.
The previous night we had booked, by email, a room with a Vrienden op de Fiets host in Leiden. Delft to Leiden is not very far, and we had decided to ride via The Hague.
The ride to The Hague went pretty well, and after lunch in a café in a park near the city centre, and a very quick look around, we continued towards Leiden.
The Dutch seem to have at least three different systems of bike route navigation. Firstly there are the long distance routes like LF1, or the North Sea Route. These seem to be reasonably well marked and cover a variety of path types. Secondly there are bike navigation signs, red on a white background, pointing to a town or city, and sometimes showing the distance. Thirdly there is a numbering system that refers to locations, not routes, so you can make your way to somewhere if you know the series of numbered locations you want to pass through.
So if you are, for instance, following the LF1 because you know it will take you to Burgh-Haamstede, you will come to a sign indicating the LF1 is one direction, and a red sign indicating that Burgh-Haamstede is an another direction. There will also most likely be a sign indicating directions to various numbered locations. This can be confusing to Australian cycle tourists until they get the hang of it. To properly use the numbered location system you would need a separate pannier just to carry the maps.
The ride to Leiden was quite nice in parts, and we found our accommodation in a very central location on a canal street. Our hostess let us in to the garage where we left our bikes and showed us to our room on the third floor, insisting on helping to carry our luggage. The stairs to the third floor are the steepest we have ever encountered.