A similar type of site would be http://www.selectresorts.co.uk/holidays/
I would like to get this done as soon as possible as the booking season for 2011 is nearly upon us.
You could work from home or I have a studio in Hertfordshire with macs and all CS5 programmes.
Let us know your interest to work with us?
Also me know the tentative date when you want to start the website development work?
Do you envisage online payments? For advertising the properties? For the rental?
What about online booking (and associated payments)? Will you keep this as a manual process or will you/would you automate it on the website?
As Andy says...
Could you possibly let us know the URL of your current website, and also tell us which technologies you're currently using (ie. PHP or ASP.NET). This will help myself, and other developers with our bids.