Glad to hear you'll Give Rhodes City more time ... and I can warn you about some things... Here is a good Map online --- you should print it out if you do not have a good guidebook (Side note -- I'm always amazed at people who will spend upwards of $10,000 on a trip but not even pop $4.00 for a used guidebook on Amazon!! if you get "ROUGH GUIDE" you can just pull out the sections that apply to your ports, & bind them with Duct Tape and voila! Guide-ettes!).
http://www.planetware.com/greece/15-top-rated-greek-islands-gr-zzz-11.htm#RHO — this website has maps for 15 top sites… scroll down till you get to #4 - Rhodes when u click the Old Town Map it gets huge & shows all the sites. PRINT!! My tips:
•CRUISE PATHWAY — Cruise crowds enter first gate in the Wall, and Roar up a sTReet to a big Square (right under #32 on Map) This street is FULL of Sovenir JUNK and the square is for Cruisers … mobs mobs mobs get away as soon as you can, and Do NOT eat there… overpriced and not good. Instead head North 2 streets for sightseeing...
•SIGHTS - Museum, (free, worth 20 minutes or more… the building, courtyard & terrace is IT more than the contents)… then up Street of the Knights (26 27) … all very nice, vry restored. Some have nice "backyards" filled with flowers. The Grandmaster palace is Very photogenic .... and entirely fake! ( the real one burned down in the 1800s, and Mussolini’s architects built this one based on what they thought he would like) Contents are authentic, gathered from around islands that Mussolini had control of, from WW I to WW II -- but the building is 1930.
•WALL WALK — do check before your trip to see if it’s on for your day, if so, you line up outside gRandmaster & buy tick at their office… they open a door in the nearest Wall “tower’” and you go up steps inside. The wall is 50? feet high or more, and 30 feet across … on the top there’s grass & bushes, even small trees@
•AWAY from CROWD — If you walk down Pythagoras to Omiru… you get to the streets that are really old, and are butted up against the wall. At #35, there a break in the wall and you go into a walled courtyard, with several nice cafes, and ruins, there’s n “ablutions” font (where muslims washed hands before prayer)… and ruins of the Baths of Suleiman. This is waay away from the cruise crowds. As I say, nice little cafes, for omelettes & Pizzas. If you want a Greek lunch, back on Pythagoras, a place called KOSTAS has a nice back garden and authentic Greek food. Don't order too much!! (Greek "side dishes" are intended for sharing & are huuge ... a "greek salad" is more than enough for 2... order no mains, 3-4 sides, and that's Lunch! for 2!)
•ANCIENT GREEK RUINS — if you go OUT of the wall to the West (Tower 13 or 14 on map) and walk directly WEST on DIagoridin about 1 km (a little more than 1/2 mile) you will come to something AUTHENTIC .. It's called "Smith Hill" for some British Admiral, but actually its the ruins of the ancient Greek settlement … temple columns, ruins, AND a stadium for races! NObody goes there, it’s magical!!!