I always try to look at the pro's and con's of staying at a Residence Inn vs and full service Marriott when I'm going to a client weekly for 6 months or more. I'm curious of others opinions on the topic.
From my experience, you loose customer service, points, and quality if you choose a Residence Inn. However, you gain space, kitchen, more privacy, and more condusive work environment (bigger office space). I have not once come across a full service Marriott that offers a room with a comfortable living/working space. I won't stay at a middle hotel (Courtyard) due to no lounge for breakfast or dinner.
Even for a shorter term, the Residence Inn delivers all of the features you mentioned. Let's not leave out spacious Fitness Centers which offers the opportunity to take a health break when on the road! Recently, on a trip to Boston, the Residence Inn Tudor Wharf was a welcome surprise*. In fact, the staff delivered more service than one usually expects at RI.
There is one feature that Fairfield Inn & Suites and Courtyards offer that I would like to see implemented at the Residence Inn - a King size bed!
The Ri gets my vote!
As I read this at the RI in SW-Ft. Wayne, as I eat a salad from Outback and enjoy a fireplace and watch my favorite TV show there is no choice for me. I really enjoy a full service Marriott if it is close to where I am working but when it comes to free parking, pool, and extra room space, give me a RI.