Aside from being around the corner from the ferry, we didn't care for it. Our room was not cleaned well each day. Our refrigerator did not work and they replaced it with one that still did not work. They do not change sheets each day, only after your 4th night, which for the price I was paying for two rooms I would have liked them changed daily. We found the concierges to be very unfriendly and made us feel like we were putting them out when we asked questions. When we arrived at the resort no one carried our bags in for us. We stood in line for 20 minutes even though we had done online check-in. Then we were given our room keys and a map. Once again no one offered to take us to our rooms even though my Mom was with us and has trouble walking. We were in the Tahiti building which was the very last building closest to the Ferry. We were also next to the elevator and could hear it every time someone used it. We had a package shipped to the hotel and when we checked in I asked for it and was told it would be delivered to our room within 20 minutes. I had to call three more times and finally walked to to the main house to get it. When I got to the main house I was told they would have to bring it to me and it would be there within 30 minutes. They brought it about two hours later. Those are just a few of the reason I didn't care for it.
A few thoughts, then some recommendations...
You aren't going to find any resort, at WDW, that changes your sheets daily. It just isn't going to happen no matter how much you pay. If you want that service, then you are going to have to ask for it, and possibly pay addtl for it.
Also..it is not routine to have a CM accompany the guests to their room. Any of the issues you had could very well happen at any resort at WDW. I have to say that the Polynesian was the one resort where there was someone, with their hand out, trying to touch our luggage from the time we arrived in our towncar. We ended up tipping 3 different people to handle our bags before we got to our room!!! Drove my dh nuts..he still talks about it.
So, with those things in mind...if you don't want to use buses, and want to spend your time in Epcot and DHS, I would go with BW, or any of the other Epcot resorts. I chose BW simply because it is more equi-distant to both parks. I stay there routinely....BWV is my
DVC home resort, and I love it there.
If you want to do a split stay....I would go with WL for the MK part of your stay...then you can take the boat to MK, and it's a bit less expensive than the other MK resorts. Then...the day you are to change resorts, you can hand off your bags to Bell Services and they will get the bags moved to your next resort. You can boat over to MK for a few hours. Then, take the bus to your new resort. Then you can get checked in. If your room isn't ready, you can still head to Epcot or DHS.
Be prepared though...baggage transfer is not quick. You won't get your bags until very late afternoon/early evening. I have transferred my bags many times...I have never had my bags delivered before 5pm...and I hand them off by 7:30am!!! If it's important that you have access to those bags, I would just get a cab to the next resort first thing in the morning...that way you can take the bags with you and they can be left with Bell Services until the room is ready. At least they'll be at the resort and you will be able to access them if need be.