Converting from DW to WP. Solution for editing a table

Hi

I am converting a site I previously created in Dreamweaver over to WordPress. I only use WP now and can not maintain this site with DW longer.
Old site: https://eskestugan.se/
New site: https://eskestugan.se.preview.binero.se/

I use Thematic Framework and run a child theme for the site. Right now I do a 1:1 conversion and has led not focus so much on the layout.

Everything has gone well until I came to the solution for editing a table showing when the house is rented out.
Old site: https://eskestugan.se/uthyrning.php
On the old site had a login function by clicking on the lock in the top right corner. After that the editor landed on a form page. Very simple and easy to use.
Screenshot after you have logged in: https://cl.ly/b0656704ba0fb9132f76
Screenshot after you’ve clicked the pen in one line: https://cl.ly/bb2d80834bb9fd8de519

Those who edit that information is a normal user so I want to create a simple editing feature. The editor shall be able to:
– Change the text in the table
– Change the color (green / red) in table cells (or use a radiobutton)

Ideally, I would not want to “editor” had to use the WordPress backend, but only edit a form.
The alternative would be “editor” to use WP-back but it should be manageable. Ex how you change the color of the simple table cell?
Or some sort of plugin with a front-end editing function.

All tips are welcome.