Well, it's a small, entry level motorhome and no longer in production. Perhaps well suited to what you want to do with it, though.
A 1990 is going to have some age problems and the low mileage is almost a drawback because lack of use sometimes lets things deteriorate more than regular use. Internal seals may have dried out from lack of lubrication that occurs when engine oil and axle and transmisison fluid are circulated during driving. Same for tires, which rely on frequent flexing to keep the rubber componds pliable (more on this later). Belts and hoses will also likely be dead of old age, simply dried out and ready to crack without notice. Check the age of the tires, which can be determined from the DOT date code on the sidewalls. See the RV Forum Glossary
under tire Manufacturing Date. Any tire approaching 7 years old MUST be replaced, regardless of apparent condition. It will
fail catastrophically sometime in its 7th year or very shortly thereafter and may cause severe damage as well as inconvenience when doing so.
I would also be leery of the refrigerator in an old rig, but there is little you can do to check it except see if it cools done to food storage levels in 4-8 hours. Unfortunately there is no way to discern if it may be near the end of its life, since all the working parts are sealed plumbing. A replacement fridge is VERY expensive - think in terms of $1800 for the size in this rig. Sometimes these fridges run on for 20 years or more and sometimes they fail in 3-4. It's somewhat of a gamble on any rig, though.
Check the operation of all appliances and systems carefully - spend an entire day and work through them systematically.