David, you didn't mention what your budget is but I can recommend Travelers World RV Park in San Antonio without reservation. They have several pull throughs in an easy access that can accomodate a 45 foot Marquis and a 26 foot cargo trailer. I know because that was the combination I put there. The location of the park is in a more rundown part of town but the park itself is a delight and the folks running the place make every effort to keep it clean and top notch. We found the group at the park friendly and welcoming, even for a transient like us, and I would have signed up for a month except the monthly/fulltime/snowbird spots are all 40 foot back ins (although there are several I could have squeezed into although they were taken). On a weekly basis they are $42 a night and $47 daily. It was steeper than we like, but you are very close to downtown and the missions, public transit is possible and the river walk park (the river walk downtown is 5 miles away but you can rent a bicycle in 30 minute stretches to bike there and back) and the wide sites and spacing in such a compact space make it a special consideration. I'd stay there again, for $500 a month it is a screaming deal. Make sure you get directions for big rig access to the park, your GPS WILL try to high center you on some railroad tracks on E Southcross and there is an 11' bridge north of the park that is to be avoided. Coming in from the south on 37 will get you there fine.
